4l60e overrun clutch failure

4l60e overrun clutch failure TOOL03 Case Insulator Remover Removes the transmission wiring harness connector from the case. ther causes of this problem include a broken sunshell or a fluid leak in the reverse hydraulic circuit. Apr 23, 2019 · The 4L60E is rated to hold 360 lb-ft, and the 4L80E is good for 440 lb-ft engine torque and up to 885 lb-ft of output torque. The 10-vane billet pump rotor, and the 5-pinion front & rear planetaries. You can assist the sprag to check it by placing the shifter in 1st gear. The 1234, 35R and 456 clutches are the most common apply components to experience problems. Start at the Point of Failure: Input Drum &  The overrun clutch hub found in GM 4L60 (700R4), 4L60E, 4L65E and 4L70E Stop hub failure in these popular performance units with Sonnax heavy duty  APPLY OVERRUN CLUTCH FWD CL FEED. FRP06 253C 3rd & 4th Clutch 4L60 (146mm OD x 2. Price: $9. 664 884 654. TH350. The 200-4R is based on the TH200/TH200C, Basically Hydramatic added a Overdrive Clutch, Carrier, Overrun Clutch, & One-Way Clutch to the front of the TH200 along with a Variable Displacement Vane Pump instead of a Fixed Displacement Gear Pump. This new Sonnax heavy duty reaction shaft (#74602-01K) is made from high-strength chromoly steel alloy to eliminate these problems. FORWARD ABUSE required to prevent the band from slipping during apply and hold the band against the  26 May 2017 The 4L60E A/B solenoids are ground controlled, with system voltage So a solenoid electrical or hydraulic failure should cause you to lose two When the JR403E shifts into 4th gear, the overrun clutch solenoid is turned off. 3-4 Clutch air bleed orifice cup plug (698) is in place. With unique rerouting of hydraulic fluid pressure, this patented kit keeps the overrun clutch applied at all times (except OD 4th), reinforcing the roller clutch to adequately support heavy loads. The teeth of the steel plates must go into the narrow slots of the drum, between the wide forward piston lugs. This transmission is designed for all out street/strip applications. All steel construction. GPZ Friction Clutch Pack Module. some times and going to 2nd and 3rd gear and had no engine braking. two overrun clutches and Kolene steels, Sonnax input drum reinforcement sleeve,  (1) K6100F/FT, K6100F/FT-LS, contain 3-4/forward/overrun bonded pistons and Sure Cure™ - Reconditioning Kit - 4L60E - Fixes Clutch Failure/Low Line . 4L60 4L60E 4L65E 4L70 Transmission Sonnax Input Drum Reinforcement Kit 77733-51K. Apr 22, 2019 · Finally, the Sonnax Smart-Tech overrun clutch valve kit engages the overrun clutch at all times except in Overdrive (4th gear), reducing the chance of an Overdrive-sprag failure. Engine Braking is determined by the Overrun cluth on the 4L60E. 300M Billet Input Shaft . (billet 6061 aluminum) overrun piston beast shell kit w/bearing kit 8 hi-energy 3-4 clutches double caged 29 element sprag 4L65 low roller clutch Transgo HD-2 shift kit Corvette servo Alto wide 2-4 red lined band with reinforced anchor New solenoids New Internal wire harness New GM Spacer plate B/W clutches Seal & gasket kit Filter Sep 22, 2018 · Well, what a question to drop into my feed. This topic contains 11 replies, has 3 voices, and was last updated by Gary 5 years, 4 months ago . Mar 13, 2015 · 21. Repeated 3-4 failure has been tracked to one of 3 things. In fact, this is what got me into 4L60E fixing in the first place. See more product details below. hope it helps at least one person out if not ohwell Common failures on 4L60E, symptom -> cause -> any possible repair: 1. Printed in U. Hi Volume Super Pump. 4 quarts (11. Forward Clutch. Bowler Transmissions believes that an accurate torque rating of a 4L80E’s internals, on a prepped track with grip, is around 550 lb-ft, but that’s with a Sonnax Smart-Tech overrun clutch valve kit. 4L60E:Friction, Overrun Improve Input Sprag & Forward Clutch Durability • Critical upgrade for all heavy-duty & performance vehicles • Easy to install The OE 2-3 shift valve only applies the overrun clutch in D3 3rd Gear. 19 May 2017 Failure at that seal will cause planetary set failure. overrun clutches Hi Guys, long story short: 4L60e Bought the truck from a guy who had it about a year. It’s referred to as the 3-4 clutch pack. TOOL01 TH700, 4L6L0, 4L60E Sonnax TCC Regulator Valve #77754-04K/03K which requires a special reaming tool, that re-bores worn out aluminum 4L60E valve bodies which is an issue when time for a rebuild, and allows installation of this special high quality valve and sleeve, This problem is the NUMBER ONE most overlooked issue by other rebuilders. 050". Raybestos Powertrain has developed GPZ material and a 3-4 clutch redesigned ZPak (RZP-001) clutch pack to combat the common 3-4 clutch failure point found in 4L60E and 4L65E transmissions. 1) a bad MAF sensor 2) a leak in the drum itself 3) 3rd circuit in the valve body Just to clarify the drive elements if a 4L60E from front to back are. 4l60e 4l65e Sonnax 4l60e-lb1 Line Pressure Booster Kit . 050" to 0. $76. steels or (9) . 080") (82-Up) A Brand New 4L65E, 700-R4, 4L60, 4L60E Alto Red Race clutch friction. Make absolutely sure you air-check everything as you install it. If you’re using a GM 700-R4, 4L60-E, or 4L80-E series of transmission in your project, and you’re going to be doing any chassis dyno tuning, we want to warn you about a potential failure point. 884. Nice. 095 in. This is mainly because GM blessed us with some design flaws. Our Build Input drum: This is the weakest component of the 4L60E transmission. I'm looking forward to getting the 4L60e rebuilt in my Silvy. The Max Pac is an 8 clutch set (instead of 6 in the stock clutch). This change was made to improve coastdown drivability in D3, but had the side effect of reducing reduced the torque capacity of the input section. Billet Forward Clutch Hub. In fact, once the transmission “shifts” into third, it’ll feel like you lost the whole thing. 4L60E Transmission Specs Class: 4-speed The values for the switch manifold shown above indicate manual valve position, NOT the currently selected gear. When you drop the gear selector from O/D to D the overrun clutches immediately apply. of torque with updated 5-pinion front and rear planetary gears compared to the 4L60E design. 82-E85 5 TH700. Some companies sell a 9 clutch set. 50. Input Drum Reinforement Kit- The GM 4L60, 4L60-E, 4L65-E and 4L70-E input drum assembly is known to crack where the input shaft is pressed into it 4L65E, 4L70E & 4L75E -- All years. Towing/Competition Valve Body Overrun Clutch, 4L60E Molded Rubber Piston quantity Add to cart SKU: 14P-4L60E-piston overrun clutch, center of picture Categories: 4L60E / 4L65E / 4L70E , GM , newyear2020 , save5 Tag: Seals & Bonded Pistons problems are found, check the stator support for the oil passage sleeve rotating in the support (figures 1 and 2). Some failure modes are common across all three clutch assemblies, while others are restricted to just one clutch. Gm 4L60E transmission technical information. Soft shifting, gradual performance  SST-1527 700R4 4L60E Overrun Clutch Inner Lip Seal Installer / Protector J- roller clutch is the underlying cause of chronic overdrive roller clutch failure in  Heavy Duty Overrun Clutch Hub. 700R4 4L60E 4L65E transmission Z Pak complete clutch plate kit This kit contains 14-1 sided clutch plates, 2 pressure plates and 1 narrow friction ring, 2 overrun clutch plates, 4 reverse input clutch plates, 5 low reverse clutch plates, 5 forward clutch plates Shell, automatic transmission (m30, 4l60e) clutch gears. Replacing the forward sprag assembly and low-reverse roller clutch is a must when building a high performance 700R4/4L60E. When you punch the accelerator with the gear selector in O/D all that happens is the 2/4 band releases and the transmission downshifts from 4th to 3rd. 4L60E. 77898E6K 4L60E,4L65E,4L70E EARLY DESIGN VALVE KIT, REV BOOST FAC STYLE Improves line pressure response and shift firmness and reduces 3-4 clutch failure. and 4L70-E input drum assemblies are known to crack where the input shaft is pressed into it (where the overrun clutch rides). 066 074. 250 . 18 Aug 2011 Overrun clutches will be worn out after 30 seconds of this behavior. For greatly improved input sprag and Forward clutch durability, Sonnax heavy-duty shift valve 77754-41 for 4L60-E, 4L65-E and 4L70-E units will apply the overrun clutch in D3 1st, 2nd and 3rd gears. The Sonnax bore plug 77754-21 resolves these problems. 4th Slip, Direct clutch burned, No Reverse Reverse Checkball Sleeve 34200-38 4L80-E, 4L85-E only, '95-later, 4/bag Component Damage/Failure OD roller clutch failure, No Forward, Overrun clutch distress Smart-Tech® Overrun Clutch Valve Kit 34200-40K 4L80-E, 4L85-E, '97-later only Lost or damaged component Pump 77898E6K 4L60E,4L65E,4L70E EARLY DESIGN VALVE KIT, REV BOOST FAC STYLE Improves line pressure response and shift firmness and reduces 3-4 clutch failure. • Loss of manual 3rd. Top 30 Common 4L60E Transmission Problems and Repair Below is a list of common transmission problems with the GM 4L60E Transmission and possible solutions to repair. GMC Sierra 1500 4L60-E Transmission 2013, High Performance Heavy Duty Automatic Transmission Clutch Hub by Sonnax®. Overrun clutch Forward clutch Input sprag (holding element) 3-4 clutch Low roller (holding element) Low When the GM 4L60-E family of transmissions evolved from the 700-R4, the overrun clutch apply no longer applied in 1st and 2nd when accelerating from a stop in D3 shifter position. When the roller clutch fails, the damage can be catastrophic and the only fix is replacing the drum, planetary assembly and mating components. ) SKU. TCI's Super-Pro kit for the electronic version of the 700R4, the 4L60E (PN-378900) offers performance enthusiasts firmer shifts and improved internals. A new 3-4 clutch apply plate (#102). When the TCC solenoid receives a signal from the engine control module (ECM), it opens a passage in the valve body and hydraulic fluid applies the TCC. This is also a pretty common issue with the 4L60E. A kit is the best way to go because all of the parts are sourced from the same supplier and are matched so the installed height will be correct. If your vehicle has a MAF then clean or replace the MAF as it is a main cause for failure of the 3-4 clutch as is low fluid level, a scored/damaged pump stator, 4th accumulator piston pin being worn. Figure 1 Technical Bulletin #508 Sep 22, 2010 · 700R4/4L60/4L60E Tips To Prevent 3-4 Clutch Failures Part 1 The 3-4 Clutch is a busy, hard worked clutch that needs all the help we can give it. Nothing supprising here, the 3-4 clutches are brown and nasty, the steels look a little burnt as well. Like most twin screw superchargers, the Whipple has an internal bypass which can swing the engine from vacuum to full boost in a fraction of a second. frictions with (8) . frictions with (7). Its going to take a bit to get the feel of what gear to be in when and when going from park to 1st I have to ratchet from 4-1 so thats a bit annoying but not a deal breaker by any means. This kit comes with reinforcement sleeve ,overrun piston, inner seal ,overrun piston ,overrun piston outer seal. NOTE: Check for visual wear on plugs. Per Gm Service Policies And Procedures, Failure To Follow Bulletin Information May Result In The Rejection Of A Warranty Claim 4L60E OverRun Clutch Pack; Container of Soft (Blue) Assemblee Goo (16 oz) Failure to do so may cause incorrect end play reading. 770. Fully computerized control of the shift points, torque converter clutch engagement and line pressure control ensure that the 4L80E will be with us for quite some time to come, easily interfacing with the newest powertrain control and diagnostic computer systems. The sprag or one way clutch is extremely important in the GM TH350 and TH400 because they carry an upshifting torque load. I'm not a big fan of installing clutches dry, but otherwise it's a good video. Will fit years from 1996 - 2006. All new, OEM assemblies. May 26, 2017 · The 4L60E A/B solenoids are ground controlled, with system voltage applied to the solenoids all the time. The GM 4L60, 4L60-E, 4L65-E and 4L70-E input drum assembly is known to crack where the input shaft is pressed into it (where the overrun piston rides). C. No Movement from Stop If I have no movement from a stop I can test to see whether the forward clutch is bad, or if the forward sprag clutch is not holding, by shifting into Also, if the coast (or overrun) clutch is dragging, this could cause poor shift quality for the 3-4 shift, but I think this symptom is pretty rare. Stop hub failure in these popular performance units with Sonnax heavy duty overrun clutch hub, which features Oct 04, 2018 · The 4L60E transmission weighs 146 pounds dry, and 162 wet. Sonnax offers a hardened steel sleeve that reinforces the input drum to prevent this failure. 77964-08K. problems i'm no trans prerson so i'm sorry for any inaccuracies. The weak OE backing plate flexes during clutch apply, allowing heat to build up unevenly within the clutch pack’s limited space. R&R. This can be adjusted via thin or thicker friction plates or steel plates. Also many 4l60e master kits contain a new 3-4 piston. $2. INTRODUCING RPM Transmissions new level 7 4L65/70E Transmission. Applying the overrun clutch in 1st and 2nd provides added durability to the 4L60 4L60E 4L65E 4L70E Transmission 2nd Gear Super Hold Servo Kit Sonnax. 4T40E. From our experience the DQ200 7 speed dry clutch DSG is…in a word…exciting; but not for the reasons you may imagine. Hi Guys, long story short: 4L60e Bought the truck from a guy who had it about a year. 077 in. I would greatly appreciate some help on  32 Seal, Overrun Clutch, Inner & Outer 36 Snap Ring, Overrun Clutch Spring Retainer The GM 700R4 & 4L60E transmissions are built for day-to-day. OEM part number: 24228345; Quantity in car: 1; Reaction sun gear (to be used with 8642202/washer) Usage: F (M30) A Service Bulletin Applies To This Part Number. 035" when using the Trans  The aluminum overrun clutch, forward clutch and 3-4 clutch pistons in the input drum of a 4L60 and clutch apply circuit leaks and clutch failure (figure 1). 81″ torque converter) of transmission fluid, Top 30 Common 4L60E Transmission Problems and Repair Below is a list of common transmission problems with the GM 4L60E Transmission and possible solutions to repair. Now it is time to install the overrun clutches, steels and also the backing plate which also acts as the apply plate for the forward clutch. 71") 3-4 clutch apply ring (#100) is in-stalled in input housing, then in-stall the following: 1. NOTE: This apply plate does not require the use of the original 3-4 clutch apply ring retainer. . Reverse input drum 2-4 band. The switch manifold information is used to limit upshifts, where desired. GM 4L60 (700-R4) and 4L60E series reaction shafts often suffer from spline twist and wear in high-torque applications due to the soft, weak steel of OE and most aftermarket shafts. lockup-no wires needed GM Chevrolet Chevy 4L60E 4L65E Transmission Parts Jan 04, 1992 · Master With Steels General Motors 4L60E 1992-1/4/93 (With High Energy 3/4 Friction) Includes Overhaul Kit 4L60E/4L65E, Friction Module 700R4/4L60E, Steel 250/250C/350/350C Low, Steel 700R4/4L60E 3/4 Clutch, Steel 700R4/4L60E Forward Clutch, Steel 700R4/4L60E Reverse Input, Steel 700R4/4L60E Overrun Clutch 443 A C 4L80E (MT-1), 4L85E (MN8) 4 SPEED RWD (Electronic Control) Revision 06/2019 Late shifts, downshift clunk, 3-4 clutch failure, no lockup, 2-4 band failure, early shifts, 1-2 slide/bump, 2-3 cut loose; reverse clutch failure, 83-87 lets you make T. GM 4L60E. INSTALLATION (See Figure 3) STEP 1. The pump stator has one of the most important jobs and that is to hold the shaft steady while the input drum assy is turning, anywhere from idle to 5500 rpm (stock vehicles). GM 4L60, 4L60-E, 4L65-E. RPM fully tested this new design transmission in house with their shop C6Z06 at full weight with 700 RWHP. 36 Element Super Sprag 2nd Gear Upgrade (Iron Drum, Billet Apply Plate, 5 Clutch Intermediate) Rollarized Geartrain (Reduces Planet Failures) Billet Overrun Clutch Valve Manifold. FREE SHIPPING ON THIS ITEM WITHIN THE CONTIGUOUS UNITED STATES! • Overrun Friction - Borg Warner® • OD Friction - Borg Warner® 3 Clutch all Models • Steels - Micro Polished Raybestos Steels Used Threw out. Clutch packs that have been slipping will often leave blue (or hot) spots on the The valve body will prevent removing the wiring harness on 4L60E models until it Notice that the overrunning clutch apply piston has matching posts for each  Late shifts, downshift clunk; 3-4 clutch failure; no lockup; 2-4 band failure; early shifts; 1-2 700r4, 4l60, 4l60e, 4l65e overrun clutch plate raybestos (r74116)  6 May 2012 Common failures on 4L60E, problems any possible repair Problem like the brakes are on overrun clutches are applying due to a cracked or  Install Forward Sprag Assembly by working the Overrun Clutch Hub into the Overrun Use 4L60E Borg Warner Hi-Energy or Raybestos equivalent Frictions ONLY. 4L60E 3/4 clutch pack burned up. 648. 4L60E & 4L70E series parts in. Your 4L60E has a set of clutches that work with both 3’rd and 4’th gear. 374010. 630. (again no details but he did mention that I Overrun Clutch Piston (633) Overrun Clutch Ball (634) Overrun Clutch Spring Assembly (635) Overrun Clutch Spring Retainer Snap Ring (636) Input Housing to Output Shaft Seal (637) Input Sun Gear Bearing Assembly (638) Overrun Clutch Hub Retaining Snap Ring (639) Overrun Clutch Hub (640) Forward Sprag Clutch Inner Race and Input Sun Gear Assembly It's a gut check with the caveat I had listed. 475 · 136 · 116. Stop the flex and you stop 3-4 clutch failure. (RZP-001) clutch pack to combat the common 3-4 clutch failure point found in 4L60E transmissions. The band could come on too aggressively if calibration is too aggressive (line pressure too high) or servo spring is broken. Sonnax input drum reinforcement kits include a hardened steel sleeve that reinforces the input drum to prevent this failure. Free shipping 700, SHIFT KIT 700-R4 81-93 (TV VALVE UPGRADE) FIX-TV valve. These things wear out and eventually even a well maintained automatic transmission will fail. The overdrive one-way roller clutch that is housed inside of the overrun/coast clutch drum also is similar between the two transmissions (figures 3 & 4). Buy a 3-4 clutch set called the Raybestos Max Pac. It's likely that if the 5 apply tangs are not completely flat, you'll get uneven loading on that piston and it will then fracture. The overdrive roller clutch on the 4L80-E and Input / Overrun sprag on the 700-R4 / 4L60-E. 4L65E / 700R4 / 4L60 / 4L60E Alto Red Race Friction, 3-4 Clutch (. This is a direct replacement part. Housing (504) Broken; Reaction Plates (508) Worn splines; Sun Gear (650) Worn; 1-2 Solenoid (313) Stuck Off, Pinched wire, O-ring failure, No voltage to the solenoid; PCM No signal to the solenoid, Failed; 3-4 Shift Valve (308) Stuck; Check the PCM for current DTCs. See all 29 photos Sonnax HD Overrun Clutch hub (New update as of 10/1/18) Sonnax Performance Pack ; FLT performance pump (Includes billet pump rotor) GM 5 pinion input carrier; GM 5 pinion reaction carrier; New reverse input drum; Sonnax wide kevlar 2-4 band with reinforced anchor; B/W hi-energy 3-4 clutch pack ; HD extra wide double caged 29 element sprag Oct 07, 2020 · Front Pump failure was an issue with the 200-4R & 700R4. The cost to replace a failed transmission torque converter clutch solenoid is determined, in part, by the vehicle year, make and model. Part No. In 2001, an updated version — the 4L65-E, was introduced. This is a Brand New 4L80E ATSG Technical Service and Repair Manual for GM Applications VN VR VS VT VX VY 4L60E 4L30E AUTO GEARBOX REPAIR MANUAL. May 30, 2018 · There is a lot that can get messed up in the 4L60E. We Never use Koleen steels. Actually, it isn't. The drive pinion turns freely on the armature shaft within the clutch housing. clutch assembly overrun clutch foward clutch geartrain valve body case preparation hydraulic schematics this is a very comprehensive and intuitive electronic pdf format workshop manual which has detailed illustrations as well as step by step instructions with pictures & diagrams. He replaced it with a used unit, it blew about 4 months later. The 4L60E went into service in trucks, vans, and SUVs in 1993 and in all RWD passenger cars (Corvette, F and B/D bodies) in 1994. Aug 26, 2017 · The overrun clutch drum and new overdrive roller clutch are assembled using the new Raybestos clutches and plates. I use a rubber-tip blow gun. CLUTCH PLATES Order Frictions with ‚B™ prefix for Borg Warner brand, ‚R™ prefix for Raybestos brand. Compress the overrunning clutch hub against the spring and remove the and any contamination which resulted from the transmission failure is likely in the oil  Get detailed info on our 4L60E transmission parts. This 7-CS clutch spring kit fits 1982 to 2015 General Motors vehicles equipped with the 700R4/4L60, 4L60E, 4L65E and 4L70E automatic transmission. Thicker, heavy-duty backing plates that completely eliminate clutch pack flex are available in the aftermarket. Remove the lock ring from the 3-4 clutch backing plate, then the backing plate. Mar 20, 2010 · The low sprag is not a common failure point with the 4L60E transmission but I wouldn't completely rule it out. Below is a list of common transmission problems with the GM 4L60E Transmission and possible solutions to repair. The GMPP transmission controller (PN 12497316) for 4L60E, 4L65E, 4L80E, 4L85E) includes 2nd and 3rd gears where the factory valve applies the overrun clutch only in D3, 3rd gear. Transmission Type: 700-R4, 4L60, 4L60-E Features: Made in the USA. Our forward sprags are 29-elements Our Products >> 4L60E Molded Overrun Apply Piston Molded overrun clutch apply piston. In addition; new filter, band, low roller clutch, forward sprag, needed bushings or all bushings, torringington bearings, rebuild the oil pump, upgrade to GM 4L60E Automatic Transmission Rebuild Kits, hard parts, rebuilt transmissions. These overrun clutch hubs feature high-strength steel and thicker material for trouble-free performance when applying deceleration engine braking in D3, D2, or D1 Item Description: Protects the overrun clutch inner lip seal from being damaged when installing the overrun clutch piston onto the input housing. We suggest replacing the forward accumulator piston (part number SNX-77987-01K) and the 1-2 accumulator piston (part number SNX-77998-03K). The 700R4's 3-4 clutch pack is the weakest link in the whole transmission. Shift Correction 4L60E Superior 93-97 Part # K4L60-E Reference # 74165 Extra information This valve body kit deals with these problems: * Bind up in reverse * Low and reverse clutch burn up * Delayed engagement in forward and reverse * Slide in 2nd * 3-4 clutch burn up * More lube oil * Clutch and band failure * Code 1870/converter burn-up 1. YEAR PART NO. 3-4 clutch pack kits. It can also be caused by the sun shell breaking. Make sure the correct (3. 847 958 374. The snap ring was also moved away from the back of the roller clutch which required a new snap ring groove that is lower in the housing, as shown in Figure 2. The 3-4 clutch is on in 3rd and 4th, main difference is that in 4th the 2-4 band is applied. Dec 03, 2018 · There is a solenoid in your GM converter that causes the the torque convertor clutch (TCC) to engage and disengage. In this Raybestos Powertrain has developed GPZ material and a 3-4 clutch redesigned ZPak (RZP-001) clutch pack to combat the common 3-4 clutch failure point found in 4L60E transmissions. 4L60E Code (DTC) C1754 Hydraulic Clutch Actuator Valve Circuit Failure 4L60E Code (DTC) C1774 Coolant Temp Out of Range 4L60E Code (DTC) C1781 Engine Coolant Temperature Signal Missing/Fault Common failures on the 4L60E transmission: TCC solenoid failed (easy fix in the pan), TCC clutch worn out (must remove trans and replace TC). 00mm x 20T) . Stop the flex and you stop a leading cause of 3-4 clutch failure. The 4L60E was found in the full range of General Motors vehicles including, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, and SAAB. 75mm x 41T) . • 2X Thicker than OE clutch hubs to prevent cracking &  The overrun clutch hub found in GM 4L60 (700R4), 4L60E, 4L65E and 4L70E Stop hub failure in these popular performance units with Sonnax heavy duty  Improve servo release oil, reducing 3-4 clutch failure. EX. 129 · 120 · 100. The forward and over run clutches look brand new. 4L60E OverRun Clutch Pack Container of Soft (Blue) Assemblee Goo (16 oz) This 4L60E Transmission Overhaul Kit with Lip Seals, manufactured in the United States by Precision International, includes the basic seals, gaskets, o-rings and filters necessary to rebuild GM 4L60E transmissions from 1993-2003. 24241477 Automatic Transmission Heavy Duty Forward Clutch Sprag: Clutch and electrical failures, for parts purchased on Amazon within the last 30 days. We also eliminate the partial lockup function GM mistakenly engineered into the 4L60E transmission, thus eliminating converter shudder, premature converter clutch failure, and the well known code 1870, which causes high “line pressure,” no fourth gear, and teeth cracking shifts at low throttle. A Brand New 4L65E, 4L60E bonded piston overrun clutch. Help prevent failures with these components and compete with increased confidence. Jan 18, 2016 · The sprag clutch is active in all forward gears (except 4th while in 4th/OD) so I'm curious what led you in that direction? The Low Roller clutch, however, is unique to first gear. Burnup is the common result. 4L60/4L60E/4L65E/4L70E Sonnax input drum reinforcement kit. 28 Jul 2017 An example of a roller ramp overrunning clutch from Altra Industrial Motion. FRP04 252C Forward Clutch (135mm OD x 1. He bought it from a used car dealer. Qty. Converter issues. Overrun clutches are just fine. I would search around for "4L60e no first gear" keeping in mind that it is distinct from the common issue of "starting in 2nd". Engine Braking in D3, D2 & D1. • Burned overrun clutch. Will fit years from 1982 - UP. 00mm x 36T. In a typical overrunning-type clutch, the clutch housing is internally splined to the starter armature shaft. DESCRIPTION QTY. Cause: two things make this transmission back up: one the reverse input clutches, can be wiped out due to bushing wear and ring damage on stator, second is low reverse clutches wiped out. 77733-51K Reinforcement Sleeve Overrun Piston Inner Seal Overrun 4L60/4L60E/4L65E/4L70E Sonnax input drum reinforcement kit. These pistons are much less likely to crack in operation, which causes clutch apply circuit leaks and clutch failure (figure 1). The line up of these parts will start with a steel, clutch, steel, clutch and then the backing plate. Unit Test Plate for 4L60E Part No. Car can be safely driven in D. New bushings have also been pressed in. A. 00mm x 41T) . 95. steels; Prevents 3-4 backing plate flex and distortion with zero-flex; Treated Housing Resistant to Fatigue Failure 17 Jul 2005 In 4L60E's the forward is not very critical . Stop Hub Failure During Deceleration. 98 gm tiltmaster/ Isuzu NPR with 5. Updated Teflon Sealing Rings . Common issues to look out for include transmission overheating, clutch problems, mechanical flywheel failure and torque-converter faults. The 3-4 clutches tend to burn up. 4L60E -- 1993 to 1996 -- Only fits if updated with late style rubber molded / bonded pistons. 025" & no more than . I'm surprised you're rebuilding the 4L60e, just because they have the week sunshell, unless you got a monster-in-a-box, or something. Instant Download. I don’t see any reference to rollerizing any components, adding hydraulic capacity to the stock failure prone direct clutch, or other real improvement. 4L60E has forward gears, but no reverse. Won't crack or break like the cheap plastic ones. Updated Bushings Throughout . 015" - . FRP05 253C 3rd & 4th Clutch Hi Capacity Jun 15, 2020 · PerformaBuilt shows what goes into its Level 3 build of a 4L60E transmission for high horsepower and aggressive-shifting applications. Problems with checkout? Try your download again. S. When torque is transmitted through the armature to the clutch housing, the spring-loaded rollers are forced into the small ends of their tapered slots. It has over 50 9 Second passes with ZERO failures!!! RPM also tested this transmission in their other shop C6 twin turbo car with over 830 RWHP, and Nov 16, 2010 · The overrun clutch must be engaged with the kit because I can feel the engine braking again why 2-1 transition is jerky if you dont match rpms. If you look up the 4L60e application chart, there are 2 clutches which must apply for 3rd gear. If you have a 700R4 O/R backing plate in there, it will be thicker than a 60E plate and that may  141. You can get engine braking in the following scenarios (According to the 4L60E book I have in front of me): A cracked forward piston is an extremely common failure in 4L60Es. Transmission Parts Direct (77725B) TH700-R4/4L60E Input Sprag (29 Segments) GM Original Equipment Automatic Transmission Overrun Clutch Spring. Click here today and save money! Clutch, Band & Solenoid Application Chart Overdrive Clutch Overrun Roller Clutch Forward Clutch Direct Clutch Intermediate Band Low/Reverse Band Low Roller Park Reverse Applied Applied Neutral Overdrive 1st Speed Locked Applied Locked Overdrive 2nd Speed Locked Applied *OR Overdrive 3rd Speed Jan 29, 2018 · The 3-4 clutch set is then updated with eight Raybestos carbon composite performance clutches with new Raybestos steels allowing for high-impact durability, heat resistance, and super hold on the Feb 28, 2007 · Overrun Clutch Components. Common failures modes and trouble codes. Everthing looks original except the transmission. Here is where you need to start diagnosing why your 4L60E won’t shift into overdrive. Home › Forums › Stay Dirty Lounge › Common Problems/Pattern Failures › 4L60E 3/4 clutch pack burned up. These HD units are upgraded and updated with large ratio pressure regulator boost valve, heavy duty Raybestos 3/4 clutch pack, the valve body spacer plate is fitted with a hardened check ball seat in the 2nd servo apply circuit to keep the ball from wearing into and eventually getting stuck in the plate which causes the band to burn, TCC regulator Jan 19, 2010 · with 4L60, 4L60E, 4L65E or 4L70E Automatic Transmission (RPOs MD8, Overrun Clutch Hub Retaining (639) Hub, Overrun Clutch (640) Wear Plate, Sprag Assembly Jun 04, 2004 · Billet Overrun Piston *Billet Forward Piston *2-3 HD Apply Valve *QUICK TIME SFI Approved Bellhousing *Deep Aluminum pan *Micropolished Internal Parts; NOTES: You must send a core transmission to RPM within 30 days before your new transmission will be sent. 078 (6 ea. complaints of burnt 3-4 clutch plates with no visible signs of why the clutches failed. REFERENCE NO. Item #: 77762A; 4L60E Molded Overrun Apply Piston. The plug is used in two locations in the valve body: to separate the forward abuse and low overrun valves, and to separate the reverse abuse and 3-2 downshift valves. 16. Price: 11. Jun 22, 2017 · To help cure everyone’s winter woes — at least where the 4L80-E OD roller clutch is concerned — Sonnax offers Smart-Tech overrun clutch valve kit 34200-40K for '97-later 4L80-E and 4L85-E units. $19. I'm a GM guy through and through, but have not done much with rebuilding trannies. 067 in. Although you may have some of these symptoms / problems with your 4L60E Transmission, the repair solution may differ. 81″ torque converter) of transmission fluid. Late shifts, downshift clunk, 3-4 clutch failure, no lockup, 2-4 band failure, early shifts, 1-2 slide/bump, 2-3 cut loose; reverse clutch failure, 83-87 lets you make T. STATOR SUPPORT GASKET AND TUBE Aug 19, 2011 · Common failures on the 4L60E transmission: Symptoms with possible repairs: 1. 490 1993-2005 1. After this wear reaches a critical point, fluid loss through the piston pin bore Replaced the stock 1-2 and 3-4 accumulators with these. Use five-pinion front/rear planetary. 078. No machining required. The 3-4 should be no less than . Oct 06, 2010 · Horrible noise in 4th and feels like the brakes are on: overrun clutches are applying due to a cracked or leaking forward piston. More Information Jan 15, 2016 · If the 3-4 clutch does not hold, the transmission remains in second gear because the forward clutch and the 2-4 band are holding, thus indicating that the 3-4 clutch is not. L85-93 5 TH700. 907 Long Sonnax 34200-40k Smart-tech Overrun Clutch Valve Kit For 1997-up Gm 4l804l85-e Increased 3-4 clutch capacity by a redesigned apply plate allows for thicker steels and clutch options for increased torque capacity. 251C Overrun Clutch (128mm OD x 2. The history of the 3-4 clutch failure in this platform is legendary. 95) (No reviews yet) Write a 4L60E Technical Information . 82-93 2 TH700. Hello, and thank you for reading my ad. Note that engine braking (via the overrun clutch in the transmission) is only available when the manual valve is in position D3, D2, D1. FRP03 252C Forward Clutch (135mm OD x 2. 087" alto red eagle, transmission parts, chevy transmission parts, chevrolet automatic transmission parts Common failures for the 4L60E (easy fix in the pan), TCC clutch worn out (must remove trans and replace TC). More than likely the reverse input snap ring has sheared or snapped off. Put about 500miles since . R&R, or refill pan and find the leak. Nov 30, 2020 · I had the wheels up in the air. Overrun clutches will be worn out after 30 seconds of this behavior. 16. 631. Feb 27, 2013 · Just found out today, the forward clutches are burn the fuck up. A clutch plate is part of a series of discs between the pressure plate and flywheel inside of a transmission. The Sonnax Smart-Tech overrun clutch valve kit 34200-40K offers a hydraulic solution to this known mechanical problem. 3-4 Clutch and Forward Clutch oil feed passage blocked or restricted (should flow check the housing, and the passages should be inspected for proper location). Stop hub failure with Sonnax heavy duty overrun clutch hub 74574-HD, which features high-strength steel and thicker material for trouble-free performance when applying deceleration engine-braking in D3, D2 or D1 ranges. Transmissions plug pin identification 1995 and up. To check for pump failure, check fluid level with the engine off, then start the engine and recheck fluid level. Jun 04, 2010 · 3-4 Clutch Apply Piston (623) for being cracked. We used polished steels as they aid in clutch application and remove heat from the clutch pack. Transmission Info. Comes in a kit. Stock 4L65E transmissions were built to withstand 380 lb-ft. Slow, slipping or no reverse: “lo-reverse†clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell. Re: 4L60E check valves Sign In Both the overrun clutch and reverse input captive check balls in the pump housing are for allowing air to escape from their circuits when fluid pressure increases during clutch apply. The overrun clutch is not electronically controlled on the 4L60E and therefore engine braking is not electronically controlled on the 4L60E. If it can’t shift into fourth anymore, that means that there is a mechanical issue at hand. But I have Never traced a 3-4 failure back to the springs. Top 30 Common 4L60E Transmission Problems and Repair. It requires 8. The weak OE 3-4 backing plate flexes during application, allowing heat to build up unevenly within the clutch pack’s limited space. Z-Pak from Raybestos "is the patented, single-sided design clutch system that outperforms OE in torque and heat capacity without coning". Don't use Kevlar (see above) and don't use the Raybestos blue plate clutch set. overrun clutches are applying due to a cracked or The 4L60E's reverse gear engages slowly, slips or fails to engage when the reverse clutches become worn out. 149. Slow, slipping or no reverse: “lo-reverse” clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell. 876. Trans out of a 2007. While this can be easy to diagnose in a car with a manual transmission, it’s a little harder when the car is an automatic, especially if it’s in the early stages of failure. 82-93 6 TH700. Download Now. Heavy Duty 2-3 Shift Valve – When the GM 4L60-E family of transmissions evolved from the 700-R4, the overrun clutch apply no longer applied in 1st and 2nd when accelerating from a stop in D3 shifter position. Both units use shift valves that are controlled by the A/B solenoids: The JR403E uses an overrun clutch solenoid and an overrun valve train to control the overrun clutch and 4th gear circuits. Can possibly cause a check engine light on or other issues including transmission issues / problems. 7 and 4l80e. The 3-4 clutch has to be engaged for 4th gear. The Overrun clutch pack and the 3/4 clutch pack. Heavy Duty 2-3 Shift Valve: When the GM 4L60-E family of transmissions evolved from the 700-R4, the overrun cluch apply no longer applied in 1st and 2nd when acclerating from a stop in D3 shifter position. 4L60E GM Molded Piston Set with input piston spring retainer Features: 1 AC Delco Input Piston Spring Retainer 1 Overrun clutch bonded rubber piston 1 Forward clutch bonded rubber piston 1 3/4 clutch bonded rubber piston We also eliminate the partial lockup function GM mistakenly engineered into the 4L60E transmission, thus eliminating converter shudder, premature converter clutch failure, and the well known code 1870, which causes high “line pressure,” no fourth gear, and teeth cracking shifts at low throttle. Here is the line up of these parts outside of the drum. 1987-ON. Overheating If the transmission system in your Mazda 6 is hot to the touch or its fluid heats past 200 degrees Fahrenheit, you may see the transmission circuit producing smoke. 4 quarts (9. TCI® Part #374010 - Set of (2) High Performance Frictions for GM 700R4 & 4L60E/4L65E - See below chart for specs & related products. With the gear selector in O/D, the overrun clutches do not apply at all. • Intermediate Band - EA™ Exclusive Hi Static Lining. Limitations of the GM 4L60-E, 4L65-E, 4L70-E OE input housing are the root cause of 3-4 burnup in performance applications. 61 4L60E/4L60 Rebuild Procedures Step 12: Install the overrun clutch set, two friction and two steel plates, starting with a steel plate. 062 in. On the other hand, 4L60E builds carried out with a thicker sun shell that is stronger can prevent failure. 3-4 Clutch Apply Piston (623) for being cracked 3-4 Clutch and Forward Clutch oil feed passage blocked or restricted (should flow check the housing, and the passages should be inspected for proper location) 3-4 Clutch check ball (620) for leaking 3-4 Clutch air bleed orifice cup plug (698) is in place Overrun Clutch Seal (632) damaged P1760 Code - In reaction to signals from the park / neutral position (PNP) switch, overdrive control switch, car velocity and throttle position, the TCM activates the overrun clutch solenoid valve. Sep 20, 2016 · Clearance on the 3-4 clutch pack frictions should be in the area of 0. The overrun clutch hub found in GM 700R4), 4L60E, 4L65E and 4L70E units is highly susceptible to cracking and breaking in applications such as autocross. Manual Valve  700R4 / 4L60E / 4L65E / 4L70E Loaded Smart Tech Input Drum with Billet Input Shaft. OVERRUN CLUTCH HOUSING - Requires a different ramp angle on the inner cam, to accommodate the new design roller clutch, as shown in Figure 1. The input sprag is a one way clutch that is solely responsible for moving a vehicle from a standing start. TH700-R4(MD8), 4L60 4L60E(M30), 4L65E(M32) 155 TH700-R4 ILL. 700- R4/4L60E Overrun Clutch Plates . The 4L60E/4L65E/4L70E automatic transmission may experience a condition of slipping, late or missed shifts in 2nd 3rd and 4th. Technical Bulletin #334 Transmission: Subject: Application: Issue Date: 4L60 and 4L60-E Delayed Forward Engagement Burnt 3-4 and/or Overrun Clutches GM 1996 About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators Jun 03, 2019 · Like the 4L60E, trends have developed that make diagnosis and repair easier as we begin to see more repeat issues. Disassemble the input drive shell forward clutch, reverse clutch, sprag, direct clutch and inspect all parts. 29 Jan 2018 PerformaBuilt shows what goes into their Level 3 build of a 4L60E Some of the issues addressed include boosting line pressure from an OEM level This is followed by the clutch return springs and overrun clutches being  CAPSULE WITH CHECK BALL 700R4 4L60E EXTENDS 3 4 CLUTCH LIFE. Replace with Sonnax Part No. Mar 03, 2018 · 3/4 Clutch Pack. B: 2-3 shift solenoid ground signal GM Genuine Parts 24282753 Automatic Transmission Forward Clutch Plate Kit with Fiber and Steel Plates Overrun 4L60E. Other factors, such as where the work is done (whether at a local auto repair shop, car dealership or you do-it-yourself) also factors heavily into the cost of repair. The forward clutches hold the outer race of the sprag. Overrun. USD. 64″ torque converter) or 11. It either can’t, or it won’t. you can determine which with simple test: drive forward and shift up to say 2nd or 3rd gear, not above 20mph max! take foot off accelerator and pull shifter into This excessive oil loss can result in delayed apply of the low/reverse clutch and a tie-up of the 3-4 clutch and 2-4 band. Hello, and thank you for reading my ad! These HD units are upgraded and updated with large ratio pressure regulator boost valve, heavy duty Raybestos 3/4 clutch pack, the valve body spacer plate is fitted with a hardened check ball seat in the 2nd servo apply circuit to keep the ball from wearing into and eventually getting stuck in the plate which causes the band to burn, TCC regulator 4L60E Input Clutch Renforcement Kit Sonnax 77733-51K 4L60, 4L60-E, 4L65-E, 4L70-E designed for use only with a stamped steel forward piston Input Drum Reinforcement Kit Part No. Remove the 3-4 clutch steels and plates, apply plate, and retainer, being careful to maintain their order as removed. Service Kit, 4L60E Input Drum (Services Sonnax Smart-Tec Drums)(Includes Overrun Piston Inner Seal, 3-4 Clutch Apply Plate, (10) 3-4 Clutch Return Springs, Bolt On Anchor Plate, Overrun Piston Outer Seal, (15) Socket Head Cap Screws) (Sonnax) Get 4L65E transmission rebuilding tips, 4L65E troubleshooting help, 4L65E technical service bulletins, 4L65E diagnostics and 4L65E technical information from TRNW. Top 30 Common 4L60E Transmission Problems and Repair Slow, slipping or no reverse: “lo-reverse” clutches are worn out, fluid leak in the reverse Horrible noise in 4th and feels like the brakes are on: overrun clutches are applying due  What is an overrun clutch used for, and which gears is it used in an automatic transmission 4L60E? 14 Jan 2016 Most common used flex styles*/ /* Basic flexbox reverse styles */ /* Flexbox alignment */ /* Non-flexbox positioning helper styles */  26 Feb 2016 Smoke the tires, not the clutches! Discover the leading cause of 4L60/E 3-4 clutch failure in this new video with Sonnax High Performance  6 Jun 2018 Use the following checklist as a convenient guide for hunting down and eliminating 3-4 clutch problems. Hello I rebuild my 96 4l60-e six months ago because of 3-4 clutch failure and now I am doing it again. A clutch kit includes a new or remanufactured clutch disc, pressure plate and release bearing. 2005 odyssey failure: 4l60e location: Catalytic replacement cost 1999: Cost odyssey: 2007 odyssey service bulletin: 2004 v6: Shudder: 1999 catalytic replacement: Unplug: 5r110 location: Catalytic heat shield: 2003 pilot shudder: 2005 catalytic california: 2004 problems: Failure: 2000 catalytic sensor: Catalytic symptoms: Performance stuck: 1996 29 Element Forward Sprag by TCI®. An internal transmission disassembly may reveal a 2-4 band and or a 3-4 clutch being distressed. No movement in any gear: pump failure, or total loss of fluid. A: 1-2 shift solenoid ground signal . From the front of the input drum, the feed holes are overrun, forward, 3-4. 070". 4L60E -- All 1997 & Later. Heavy Duty Overrun Clutch Hub Stop Hub Failure During Deceleration Engine Braking in D3, D2 & D1 • 2X Thicker than OE clutch hubs to prevent cracking & breaking in critical areas that engage the input sprag inner race • Manufactured from high-strength 4140 chromoly steel • Direct replacement for ’95-later hubs Fits 4L60, 4L60-E, The aluminum overrun clutch, forward clutch and 3-4 clutch pistons in the input drum of a 4L60 and 4L60E can be replaced with bonded steel pistons. A honest shop when they rebuild a trans will install a master kit that includes gaskets, seals, sealing rings, clutch plates, & steels. About 5 months later, tranny blew (no details on how or why). TOOL01 Rear Clutch Spring Compressor TH700, 4L60, 4L60E Part No. If out of fluid, avoid running the engine until the trans is refilled to avoid pump damage. Shifting Strategies LAUNCHING A CAR WITH A 4L60E. If a lip seal was cut or damaged during assembly then it will cause a leak and failure to build enough pressure. Can accept (8) . May 09, 2008 · Removing forward sprang and over run clutch hub 3-4 clutch, forward clutch, over run clutch, and forward sprag assembly removed Forward sprag and stack of clutches. Monster Transmission provides transmission parts for all transmission year, make, and models. (again no details but he did mention that I where the 3-4 clutch pack is to be installed. 3-4 Clutch check ball (620) for leaking. On both of these units, this one-way clutch holds in 1st through 3rd May 31, 2019 · 4L60E has a weakness and that is the factory sun reaction shell where it breaks around the hub and will, therefore, not stand the test of time. For greatly improved durability, the redesigned Sonnax valve applies the clutch in D3 1st, 2nd and 3rd Gears. Mar 18, 2011 · The 4L60E transmission weighs 146 pounds dry, and 162 wet. Page 1 of 2 1 2 Last 3-4 clutch failure is common in 4L60E's. 2-4 Band, Raybestos, Pro Series We needed a 4L80E automatic transmission to handle our Whipple supercharged LS7 engines for mixed street and track use. Overrunning clutches, sometimes called freewheel clutches, are  New 3rd accumulator check ball A common source of 3 4 clutch failure New 698 is in place Overrun Clutch Seal 632 damaged 7 Checkball located in the case  The 4L60E is built on the heritage of the 700R4 and shares many qualities with its predecessor. 3/4 Clutch. Find Sonnax Transmission Company 74574-HD Sonnax Heavy-Duty Automatic Transmission Clutch Hubs and get Free Shipping on Orders Over $99 at Summit Racing! Sonnax heavy-duty automatic transmission clutch hubs eliminate hub failure. The most common problem is probably going to be the low reverse clutch pack. I'm sure many of you have experienced input sprag failure in a 4L60E. Fits 4L60-E, 4L65-E, 4L70-E Part This sounds like a “blueprinted” stock build, with an aftermarket clutch material, and some minor mods made to the shift plate and/or pressure regulator for firmer shifts. Adjusted Price The 4L60E is not easily swapped with the 4L60, as the 4L60E depends on a powertrain control module (PCM) to shift. the Mar 18, 2019 · 4L60E No Overdrive Causes. Forward / Overrun Clutch Spring & Retainer Assembly. BTW here's a great video on 4L60E rebuilds. Contents: 2 Overrun Tan, 5  29 Dec 2011 but I am curious on this failure, something common just because the cast piece is weak The only thing that sits inside that piece is the overrun clutch piston (with In fact, this is what got me into 4L60E fixing in the first place. More Information Clutch, Band & Solenoid Application Chart Overdrive Clutch Overrun Roller Clutch Forward Clutch Direct Clutch Intermediate Band Low/Reverse Band Low Roller Park Reverse Applied Applied Neutral Overdrive 1st Speed Locked Applied Locked Overdrive 2nd Speed Locked Applied *OR Overdrive 3rd Speed High Performance Master Rebuild Kit Alto Red Eagle Clutch Plate Rebuild Kit with Kolene Steel Plates and Alto 3/4 Red Eagle 9 Plate Power Pack for 4L60E 4L65E 1997-2003 GM Applications Features: Gasket and Seal Overhaul Rebuild Kit including Neoprene Pan Gasket Corvette Servo Piston Kit Deep Pan Housing fatigue failure resistance and housing life are significantly improved with a special treatment process that greatly reduces stress crack formation. The overrun clutch is not electronically controlled on the 4L60E and therefore valve, clogged valve body, over-run clutch failure(cracked apply piston or clutch). Overrun Clutch. A bad 3-4 clutch pack can certainly cause the 3’rd and 4’th gear to stop working. This list is merely a guide to the possible solutions. Prevents tearing of the lip seal by protecting it when 4L60E Overrun Clutch Steel (1993-UP) 4L60E Overrun Clutch Steel (1993-UP) Raybestos Powertrain. Using the Clear Info function erases the Freeze Frame and Failure Records from the been Overrun clutch fluid pressure seats the overrun clutch checkball 633 . I'm trying to shift the gears in a GM 4L60E transmission. lockup-no wires needed GM Buick Oldsmobile Pontiac Chevrolet Chevy 4L60E 4L65E Transmission Parts Common failures on 4L60E, symptom -> cause -> any possible repair: 1. Monster Transmission provides transmission parts for all transmission year, make, and models. 700r4, 4l60e automatic transmission friction low/reverse . This patent-pending kit delivers exceptional protection against failure by applying the overrun clutch in all ranges other than 4th Gear The 4L80-E and 4R100 have similar arrangements of the overdrive planetary and the overrun/coast clutch (figures 1 & 2). This change was made to improve coast-down drivability in D3 but had the side effect of reducing the torque capacity of the input section. The trans slip in 1st. Overrun Clutch Seal (632) damaged. Aug 25 2017 The overrun clutch drum and new overdrive roller  GM, 700R4 & 4L60E/4L65E High Performance Friction Over-Run (2) . 4l60e overrun clutch failure

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