Apr 18, 2019 ... ... No Reverse (What A Pain) 4L60E If you would like us to review your products email us [email protected] If You would like to sponsor a ...Body of Evidence. It is not too often that you see a no-reverse concern caused by a bad solenoid or by a valve-body problem that does not affect any forward upshifts. Generally you’ll see this only on valve bodies that have a reverse-inhibit function, such as the 5L40 or JF506. There are always exceptions, though.Delayed engagement is an extremely long period of time between when the transmission gear selector is moved from park (or neutral) into any one of the moving gears. It can be anywhere from a few extra seconds to a minute. Most of the time, if the transmission has not engaged after a minute, it’s not going to.Mar 19, 2015 · I did my first trans rebuild this week on a 4l60e that doesn't seem to want to work in the reverse gear. As far as I can tell it shifts through all forward gears fine (as tested in the air on jackstands) but when engaged into reverse, I get nothing. The engine feels a load when in reverse. If I shift into reverse while the rpms are up the ... 1. Slow, slipping or no reverse: “lo-reverse” clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell.9. TCC always locked: TCC apply solenoid circuit shorted to ground, TCC solenoid blockage (easy fix in pan), or TC broken (must remove trans and replace TC). 10. 1-2 Shift shudder at WOT; delayed or abnormal 1-2 shift: 1-2 accumulator piston cracked or stuck cocked in the bore. Easy fix in the pan.possible reason why you may not have reverse in a Chevy 1500 / Chevy Tahoe** Codemansauto DIY Tools ** 1. Transmission Sunshell Gear Reaction shell http...Ask Your Own Chevy Question. it won’t shift into 2nd, you have it out in 1sr until it shifts into 3rd. Chevy Mechanic: kalamykid. This sounds like the reaction shell has stripped or broken the hub. it can also be the low one way roller clutch slipping. Both of these are at the inside rear of the transmission.Oct 19, 2014 · Put moderate pressure on the "nipple" on the servo cover. If the cover will recess into the transmission 1/4" or more this will prove the band is worn out and most likely the reason there is no 4th gear. The 4th piston does not have as much travel as the 2nd gear piston. R&R = Remove & Repair (or Rebuild) = Transmission must be removed to fix the problem and may have to be rebuilt or replaced. Common failures on 4L60E, symptom < cause > any possible repair: 1. Slow, slipping or no reverse: “lo-reverse” clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell.Solenoid Failure. A common cause of the 4L60E not shifting into overdrive is solenoid failure. Solenoids control the flow of fluid, enabling gear changes. Example: A faulty 1-2 shift solenoid may prevent the transmission from shifting into overdrive. If the 3-4 shift solenoid fails, the transmission may lose overdrive completely.May 30, 2007 · 10. Trans shifts into gear harshly, 3rd gear starts, manual 2nd available but no 1st, no 4th, and no TCC lockup: No power to transmission, or trans is in limp-home mode. Check trans fuse underhood, and make sure transmission electrical connector is plugged in. Easy fix. 11. No 1st or 4th available; trans shifts 2nd to 3rd by itself in D or OD ... You may have seen advertisements staring celebrities James Garner or Robert Wagner that go something like this… “If you’re 62 years of age or older and own your own home…” They’re ... If your 4L60e wont go into park and feels like the shifter won’t grab the correct gear, but everything else is fine… here’s the probable solution. Jan 5, 2022 ... This clip discusses common drivability problems caused by failures of the 4L60E and 700R4 gear train ... How to fix No Reverse in GM 4L80-E GM ...I did my first trans rebuild this week on a 4l60e that doesn't seem to want to work in the reverse gear. As far as I can tell it shifts through all forward gears fine (as tested in the air on jackstands) but when engaged into reverse, I get nothing. The engine feels a load when in reverse. If I shift into reverse while the rpms are up the ...We went in, cleaned and replaced the components that are normally replaced in a 4l60E. Put in new clutches and steels, commercial 3/4 pack, converter, and a .500 boost valve, corvette servo to wake it up a little. When done the transmission felt great, had good line pressure - good to go - not so fast! 1000 miles later 3/4 gone, car was no ...Feb 4, 2009 · 4L60E No Reverse When Cold. For the past two mornings my 1999 Tahoe has given me some trouble shifting into reverse. The transmission is factory original, including its ATF, with 77,000 miles on it. The past two mornings it has not wanted to shift into reverse upon start-up. Both mornings the temperature has been sub-zero, but it has been that ... If your 4L60e wont go into park and feels like the shifter won’t grab the correct gear, but everything else is fine… here’s the probable solution.4L60E Transmission Problems. The 4L60E is a for speed automatic transmission with a .70 overdrive. The overdrive gear is gear number four. As the 4L60E ages, one of the most common problems that it develops is that it won't shift into overdrive anymore. Without overdrive, your vehicle turns into a time machine and takes you back to an.You may have seen advertisements staring celebrities James Garner or Robert Wagner that go something like this… “If you’re 62 years of age or older and own your own home…” They’re ...4L60-E PWM Application Sample. As a further effort to improve fuel economy and prolong the life of transmission and engine components, PWM control evolved into EC3. The valves and solenoids remain (virtually) the same as with PWM operation, but the control strategy and TCC lining have again undergone changes.Cause 1. The 4L60E valve body is in second gear by default when the engine is off. Once the engine is started and line and AFL pressure have generated 48 lbs. or more, the 1-2 shift valve will be stroked into first gear. It requires 48 lbs. to overcome the tension of the 1-2 shift valve spring. A deficiency in the line or AFL pressure that ...Step 3: Split the Circuits "Mechanically". For this "No Reverse" shift issue we are going to mechanically split the circuits by blocking the Low/Reverse band. To do this, we will have to have the oil pan removed. It is a very simple procedure and can be done two different ways.#1. Tinbender59. I AM JUST PLUM CRAZY. Joined. Mar 17, 2011. Messages. 283. Reaction score. 4. Location. Kansas. Common failures on 4L60E, problems any …Fixing a hot wire and a ground wire that are reversed is as easy as unscrewing and switching the wires on the receptacle and screwing them tight again. Diagnose the error visually ...4l60e transmission came in with no reverse. Can you guess why?At home I checked it again and reverse is definitely gone with no noise and sounds like it is in neutral. ... My truck is in very good shape otherwise and its cheaper to fix it than buy an newer one! Thanks for the help, ... My understanding is that when you lose reverse in 4L60E's it's normally the beginning of the trans crapping out on you ...General Details. The TransGo 4L60E SHIFT KIT® Valve Body Repair Kit fits 1993 to 2015 General Motors vehicles equipped with 4L60E, 4L65E and 4L70E automatic transmissions. Common complaints are TCC slip or shudder, codes P1870 and P0894, harsh 1-2 shift, double bump shifts, 2-3 flare-up, burnt 3-4 clutch plates as well as inconsistent pressure ...4L60E Absolute Beginners Rebuild Tips How easy it can be with right tool. Watch out don't rip you rubber rings on the snap retainer ring cave. use lube and...R&R = Remove & Repair (or Rebuild) = Transmission must be removed to fix the problem and may have to be rebuilt or replaced. Common failures on 4L60E, symptom < cause > any possible repair: 1. Slow, slipping or no reverse: “lo-reverse” clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell.So you provided ground to the body and you got first gear. Shift solenoid A ground path is missing. Check wire integrity rom 4L60e connector pin A to PCM pin 23. Check continuity with PCM and 4l60e connectors pulled out. If wire is good and not broken, then the problem is internal to the PCM.You can manually operate the 2-3 shift with the shifter. If you think that you may have a vehicle that has entered limp mode, go ahead and use the how to fix limp …Final Thoughts. In conclusion, you should diagnose and fix a 4L60E transmission that won’t move in any gear carefully. Low fluid levels, solenoid issues, or mechanical failures, can be responsible for this problem. You need timely diagnosis and professional assistance in order to prevent further damage. Addressing the problem …This is a common damaged the PTFE sealing rings by DIY people replacing parts in the 4L60 series transmission. In the shifter position "D" the low - reverse clutch pack is Not applied. The low roller clutch is holding. In the shifter manual position "1" , the low-reverse clutch pack is applied.Reverse would probably work with a bad VSS. No? The 3-4, overrun and forward pistons are new. But, there's not enough pressure to fully engage the forward piston. And certainly not enough pressure to engage both the forward and reverse pistons. And, I understand the forward piston needs to engage for reverse. The teflon rings looked good.T. T-bucket23. 6890 posts · Joined 2005. #3 · Mar 12, 2011. Start with the simple stuff. Going forward in N may indicate the linkage is messed up. Artificial Intelligence is no match for Natural Stupidity. Chet. This is an older thread, you may not receive a response, and could be reviving an old thread.Nothing I've torn down so far has any wear, and there's been no odd noises coming from anywhere while driving; TPS shows correctly in my transmission controller software, reading from about .5v to 3.4v; Based on what I can find out by other forums and such, this collection of symptoms seems to be a very uncommon one.May 13, 2022 · 94 Suburban 1500. Has no reverse or any other gear with the TCC plugged in. Unplugged the TCC and I can manually shift through the 4 gears and do 90 plus mph. So it's an electronic issue. Any guess... If the vehicle is still driveable, plug in a scanner than can read real-time data, and jack the rear tires up off the ground, rear axle on jack stands and "drive" it so you can see if the computer is commanding 4th. If the computer is commanding 4th and the trans is not going=internal trans problem.R&R = Remove & Repair (or Rebuild) = Transmission must be removed to fix the problem and may have to be rebuilt or replaced. Common failures on 4L60E, symptom < cause > any possible repair: 1. Slow, slipping or no reverse: “lo-reverse” clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell.Sonnax Sure Cure kit SC-4L60E is a comprehensive reconditioning package for GM 4L60-E, 4L65-E and 4L70-E PWM units featuring the best Sonnax products developed to help rebuilders restore and enhance transmission performance. Sure Cure components are the same Sonnax parts sold individually to resolve common valve body complaints as well as other ...Oct 14, 2004 · The 4L60E usually has an updated drum in it but DACCO sells one called "The Beast" that is a nice part to install....And only about $20.00 more than the updated one. The Forward gear that you have should feel sluggish because of no reaction from this shell. No codes tells you that there are no valve or seal problems. Jan 5, 2022 ... This clip discusses common drivability problems caused by failures of the 4L60E and 700R4 gear train ... How to fix No Reverse in GM 4L80-E GM ...Reverse Mortgages are convenient loans that give you cash using your home’s equity. Some people find these loans help them, but they can lack the flexibility others offer. In order...How does reverse osmosis work? Find out how a semipermeable membrane can act as a filter for some particles while letting others pass through. Advertisement Don't feel stupid if yo...No lockup or 4th. Fixes harmonic bounce that wears out pump and valves and causes ... The TransGo 4L60E SHIFT KIT® Valve Body Repair Kit fits 1993 to 2015 General Motors vehicles equipped with the 4L60E, 4L65E and 4L70E automatic transmission. ... Reverse input piston orifice cup plugs; USA-made hardened steel TCC regulator and isolator valve ...Tow your car to the garage, check the pump, and the torque converter to see what is causing the problem. If the pump is failed, then there is no other option than to change it. If the torque converter is the culprit, check if it is set properly with respect to the flywheel. However, if it is broken, you would have to replace it with a new one.1995 silverado, 4l60e transmission. no reverse. al other gears work fine. slow progression to reverse not engaging, used to shudder going into reverse, now it won't reverse at all. please help. Answered in 10 minutes by: Chevy Mechanic: frank. For only reverse not to work a one way roller clutch in not holding as 1st and resverse uses the …Jan 11, 2016 · Reverse would probably work with a bad VSS. No? The 3-4, overrun and forward pistons are new. But, there's not enough pressure to fully engage the forward piston. And certainly not enough pressure to engage both the forward and reverse pistons. And, I understand the forward piston needs to engage for reverse. The teflon rings looked good. Soon after rebuilding a 4L60-E transmission in 2002 and newer Chevy Trailblazers, the vehicle comes back on a tow truck with a sudden no move condition. Upon disassembly, you discover that the lugs in the pump rotor are sheared off or the rotor itself is shattered. The cause may be that the 300 mm B-85 torque converter was replaced as part of ...1994 4l60e no forward or reverse. Ok i have a 1994 chevy s10 that the transmission recently went out (4l60e) easy fix right or at least i thought so. replaced it with a junkyard match. come to find when instaling that there is a gap between the torque converter and the flywheel about 3/4" so i shim it best i can trying to keep it balanced get ...R&R = Remove & Repair (or Rebuild) = Transmission must be removed to fix the problem and may have to be rebuilt or replaced. Common failures on 4L60E, symptom -> cause -> any possible repair: 1. Slow, slipping or no reverse: “lo-reverse” clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell.4L60E Transmission Problems. The 4L60E is a for speed automatic transmission with a .70 overdrive. The overdrive gear is gear number four. As the 4L60E ages, one of the most common problems that it develops is that it won't shift into overdrive anymore. Without overdrive, your vehicle turns into a time machine and takes you back to an.what is applied. Bill this unit has an aluminum piston in the reverse input drum. Once you have it apart, look at that piston carefully. You will see a bleed hole in the piston, where the bottom 'waved' steel plate will flatten out against the piston, when this piston is applied. Close that hole down in size. If your 4L60e wont go into park and feels like the shifter won’t grab the correct gear, but everything else is fine… here’s the probable solution. 1999 4L60e Small Shaft with NO REVERSE what happened!? Oh man i don’t even know where to start!!! First thing WHOEVER sent us the Milwaukee 3/8 bushless impa... This is a common damaged the PTFE sealing rings by DIY people replacing parts in the 4L60 series transmission. In the shifter position "D" the low - reverse clutch pack is Not applied. The low roller clutch is holding. In the shifter manual position "1" , the low-reverse clutch pack is applied.22-11 4l60e valve body service, valve body damage 21-36 gm 4l60/65/70e sudden loss of line pressure 21-40 4l60e brutal 1-2 shifts ... 95-07 gm 4l60-e premature low/reverse clutch failure 95-62 gm 4l60-e soft 1-2 upshift, 1994 model 94-02 gm 4l60-e new low/reverse piston (window) 94-04 gm 4l60-e 2nd gear starts, after overhaul ...In this video, i diagnose a hard 1-2 shift in a 1994 chevy van that came from another transmission shop that was having trouble getting this van to work corr...Body of Evidence. It is not too often that you see a no-reverse concern caused by a bad solenoid or by a valve-body problem that does not affect any forward upshifts. Generally you’ll see this only on valve bodies that have a reverse-inhibit function, such as the 5L40 or JF506. There are always exceptions, though.2001 GMC 2500HD 4L80-E Reverse servo extension for a quick fix to get back on the road without pulling the transmission out and down. This is not a permanen...Jul 29, 2023 · Solenoid Failure. A common cause of the 4L60E not shifting into overdrive is solenoid failure. Solenoids control the flow of fluid, enabling gear changes. Example: A faulty 1-2 shift solenoid may prevent the transmission from shifting into overdrive. If the 3-4 shift solenoid fails, the transmission may lose overdrive completely. C. c5ct Discussion starter. 34 posts · Joined 2007. #1 · Jul 30, 2008. I have 99 ram 1500 i assume I am correct it has the 46re. I have no reverse and all forward gears and overdrive work perfectly but there is no engine braking in low 1 or 2. From what I've read in the manual I have narrowed the problem down to a faulty direct clutch.Bad Sprag. 4L60 E Sprag. If you end up with a bad sprag, the 4L60E won’t be able to shift into 3rd or 4th gear. It provides a direct connection between the input housing and the input sun gear. Without being able to lock, it won’t be able to facilitate the transfer of energy to the upper gears and the transmission will remain in 2nd gear.2001 GMC 2500HD 4L80-E Reverse servo extension for a quick fix to get back on the road without pulling the transmission out and down. This is not a permanen...Slow, slipping or no reverse: “lo-reverse” clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell. It is possible to remedy a fluid problem by removing the checkball from its cage in the case in the rear of the transmission may help (must remove valve body), or adding a high-viscosity additive or other seal ...Basic work truck. Bought off eBay, runs good, bad trans. Disassembled trans, appeared to be fresh rebuild, pump rotor broken, as if someone installed with out seating torque converter. Repaired pump, since upper clutches were new, didn't go deeper... Yea, my bad. Now have all 4 forward gears, shifts normal. No reverse.Solenoid Failure. A common cause of the 4L60E not shifting into overdrive is solenoid failure. Solenoids control the flow of fluid, enabling gear changes. Example: A faulty 1-2 shift solenoid may prevent the transmission from shifting into overdrive. If the 3-4 shift solenoid fails, the transmission may lose overdrive completely.4L60E Transmission Problems. The 4L60E is a for speed automatic transmission with a .70 overdrive. The overdrive gear is gear number four. As the 4L60E ages, one of the most common problems that it develops is that it won't shift into overdrive anymore. Without overdrive, your vehicle turns into a time machine and takes you back …Step 3: Split the Circuits "Mechanically". For this "No Reverse" shift issue we are going to mechanically split the circuits by blocking the Low/Reverse band. To do this, we will have to have the oil pan removed. It is a very simple procedure and can be done two different ways.R&R = Remove & Repair (or Rebuild) = Transmission must be removed to fix the problem and may have to be rebuilt or replaced. Common failures on 4L60E, symptom < cause > any possible repair: 1. Slow, slipping or no reverse: “lo-reverse” clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell.The 4L60E transmission weighs 146 pounds dry, and 162 wet. It requires 8.4 quarts (9.64″ torque converter) or 11.4 quarts (11.81″ 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.Ed Lee. A 2006 Chevrolet Suburban C1500 was brought to a transmission shop. The vehicle was equipped with a 5.3L V8 gas engine and a 4L60-E transmission. The customer complaint was “slipping in reverse.”. The vehicle had 128,967 miles on the odometer, so the customer was sold a complete rebuild, including a rebuilt torque converter.The rubbing sounds could be the sun shell rubbing the case. The sun shell tangs get spread out from being driven by the reverse input drum. IF they are spread out the sun shell needs to be replaced. I ALWAYS replace the sun shell with a "Beast" sun shell on a 700 or 4L60E build. It's a $45 part and well worth the peace of mind.Oct 14, 2004 · The 4L60E usually has an updated drum in it but DACCO sells one called "The Beast" that is a nice part to install....And only about $20.00 more than the updated one. The Forward gear that you have should feel sluggish because of no reaction from this shell. No codes tells you that there are no valve or seal problems. If you’re trying to figure out who called you from that mysterious phone number, there are plenty of ways to reverse check the number. Some methods work, some don’t, and most try t...Ask Your Own Chevy Question. it won’t shift into 2nd, you have it out in 1sr until it shifts into 3rd. Chevy Mechanic: kalamykid. This sounds like the reaction shell has stripped or broken the hub. it can also be the low one way roller clutch slipping. Both of these are at the inside rear of the transmission.2003 S10 No reverse 4l60e. We have been told that this was because of the sun gear. I am looking to buy a transmission and have a local shop install it. Several years ago, Monster Transmission had a good reputation. Now that doesn't seem to be the case in some places. 4.3l V6. Are their any good options on where to look at buying.Common failures on 4L60E, symptom < cause > any possible repair: 1. Slow, slipping or no reverse: “lo-reverse” clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell. It is possible to remedy a fluid problem by removing the checkball from its cage in the case in the rear of the trans may help (must remove ...May 13, 2021 ... If your 4L60e wont go into park and feels like the shifter won't grab the correct gear, but everything else is fine… here's the probable ...Thank you for watching the ATSG Confirmed Fix video covering 4L60E: No Reverse Engagement. Become an ATSG member now to access all of the Confirmed Fix video...4. 1-2 shift is delayed and harsh, may not shift into OD: TPS needs to be checked for smooth and linear electrical response over the entire range of motion. If not, this must be replaced. 5. Trans does not upshift out of first, speedometer reads zero at all times: Could be VSS failure.Assembling the reverse input drum4L60E, 3rd gear repair during rebuildSep 25, 2022 · The 4L60E was the model prior to this one that targeted small cars. 4L80E transmission highlights. Average lifespan:230,000-250,000 miles; Reliability Score:High; Prone to minor issues:No; Price for repair after failure:$900-$1,300; Price for replacement:$2,500-$3,500; Availability of parts:Average Scott shows you his fix for P0756 code on my Tahoe. I lost 1st gear but 2-4 worked fine. I replaced the shift solenoids and still had the problem. I hope thi...1991 3500 with 7.4 engine appears to have 94 or later engine and trans, have been using truck 5 years. speedometer reads 168000. trans rebuilt, replaced a and b silenoil and tps. scan tool shows switches changing gears, but staying in 2nd gear. can feel some change when down shift manually. trans doing same be for rebuilt. Chevy Mechanic: Gary.
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At home I checked it again and reverse is definitely gone with no noise and sounds like it is in neutral. ... My truck is in very good shape otherwise and its cheaper to fix it than buy an newer one! Thanks for the help, ... My understanding is that when you lose reverse in 4L60E's it's normally the beginning of the trans crapping out on you ...However the first time we installed it it would only upshift from 1st to 3rd upon letting off the gas and if to much gas was applied (not much) it would slip right off of 3rd. we pulled the transmission and went through it, and only found the 3/4 clutch and plates burnt up. replaced, cleaned it up and installed again. at first it would ...The 4L60E usually has an updated drum in it but DACCO sells one called "The Beast" that is a nice part to install....And only about $20.00 more than the updated one. The Forward gear that you have should feel sluggish because of no reaction from this shell. No codes tells you that there are no valve or seal problems.Really loud grinding, no reverse. So, my 5.3 2000 silverado Z71 has been having some slight issues with banging into drive and reverse from park, as well as producing a metallic knocking sound in reverse and in 1st gear... So, tonight I was taking a spin around the block, trying out some audio gear. I did get heavy on the throttle once or …Reverse Mortgages are convenient loans that give you cash using your home’s equity. Some people find these loans help them, but they can lack the flexibility others offer. In order...Examples of reversible changes include melting chocolate and changing it back into a solid by cooling it, and melting candle wax by heating it and solidifying the wax by cooling it...Here is an update. I checked line pressure in in park and drive line pressure is between 55 and 200 psi. 55 at iddle and 200 psi at WOT. Trans shifts and feels fine in all forward gears. Line pressure in reverse was 65 to 70 psi at idle. When I started to accelerate ( lightly) in reverse line pressue went up to 120psi.May 24, 2009 · 1995 silverado, 4l60e transmission. no reverse. al other gears work fine. slow progression to reverse not engaging, used to shudder going into reverse, now it won't reverse at all. please help. Answered in 10 minutes by: Chevy Mechanic: frank. For only reverse not to work a one way roller clutch in not holding as 1st and resverse uses the same ... General Tech - 4L60E Question - suddenly lost 3/4 Gears - Just did a rebuild on a 4L60E transmission. (my first) It worked great for four days, had all gears, shifted at proper RPM/Speed, and all seemed great. Then, suddenly, I lost third and fourth gear. There was no slipping or other indication of a problem, and it...4l60e no reverse - LS1TECH 4L60E problems-no reverse - HybridZ A couple of threads with a little info. You may have some luck asking for help on somewhere like LS1tech since it looks like there are knowledgeable 4L60E specific trans people on there answering questions. They can probably help you narrow down the problem more than …Sonnax Forward and Reverse abuse bore plug 77754-21 resolves these problems. This 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. The Sonnax plug has an increased diameter to restore proper valve body clearance in the circuits.If your 4L60e wont go into park and feels like the shifter won’t grab the correct gear, but everything else is fine… here’s the probable solution.4L60E No Reverse When Cold. For the past two mornings my 1999 Tahoe has given me some trouble shifting into reverse. The transmission is factory original, including its ATF, with 77,000 miles on it. The past two mornings it has not wanted to shift into reverse upon start-up. Both mornings the temperature has been sub-zero, but it has …1999 4L60e Small Shaft with NO REVERSE what happened!? Oh man i don’t even know where to start!!! First thing WHOEVER sent us the Milwaukee 3/8 bushless impa...This typically has a normally working OSS, but no movement Forward or Reverse. Line pressure will typically be normal with this condition. . 3-5-R Drum weld broken/cracked is typically a no or slipping Reverse condition along with 3rd and 5th Gear issues. Hopefully this will help many of you in the repair of GM 6L45, 6L50, 6L80 and …R&R = Remove & Repair (or Rebuild) = Transmission must be removed to fix the problem and may have to be rebuilt or replaced. Common failures on 4L60E, symptom < cause > any possible repair: 1. Slow, slipping or no reverse: “lo-reverse” clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell.Help! 4L60E no rev after rebuild. Considering your admitted limited experience with transmission repair,when you installed the pump, damaging the sealing rings on the pump is the most likely thing that may have happened. This would cause a huge leak in the reverse input drum [ the drum the band rides on ]..