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2001 Chevrolet 3500HD tow truck, gas engine 8.1 (no reverse)

Transmission 4L80E - Everything forward is good except reverse, so took oil pan out and found brownish color fluid. Took reverse piston out and also found out there was 1 bolt loose in the rear servo or rear cover. Replaced rear piston seal and retorqued the cover, rear servo. Put new transmission fluid and new screen and still no reverse. (When I put it in reverse it feels like it clicks and engages but it goes very, very slow and sometimes not at all). 1st, 2nd, 3rd & 4th gears seem okay to me. Please let me know what else I can do to fix this reverse problem.
Thanks in advance for your answer.
Luis Burgos

Posted by on

  • Anonymous Feb 19, 2009

    1991 chevy suburban 3/4 ton 4x4 just started having problems, slips in forward gears going up hills and no has now reverse, 4l80e trans and I pulled the pan changed the filter and fluid and gaskit worked for a day or two but back to the same now , also I have access to a turbo 350 trans will it bolt up and work right with out alot of changes

    Thanks for your time Todd

  • Jerry Koski
    Jerry Koski May 11, 2010

    sounds like possable reverse drum is broken .. just possable would have to take it down to find for sure.



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Posted on Jan 02, 2017

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SOURCE: 4L80E Diesel Transmission Replacement

the gas tranny should work. gm was pretty good about keeping the same bolt pattern.

Posted on Jun 04, 2009

  • 1915 Answers

SOURCE: I have a 4.3L V6 automatic transmission at 99,000

check your fluid level, it is probably low-check it when the engine is running, after the vehicle has been driven, on a level surface-if it is up to full, you will probably have issues with the trans, and you should at least consider having the trans services (drain the fluid by dropping the pan, cleaning out the pan and magnet, installing a new filter)-I hope this helps - rate my answer to let me know and to help others with the same problem

Posted on Feb 05, 2011

  • 869 Answers

SOURCE: I have a 2005 Chevrolet Suburban and I have had

it is mostly a gearbox failure. get it replaced on ur suburban.

Posted on Feb 07, 2011

  • 836 Answers


You may have a power problem, the battery light is an indicator of charging problems that can affect performance of electrial componets [ the transmission is controled that way ]. Have the charging system checked out. If you had an alternator replaced recently then it could be a faulty remanufactured one - this is very commom with this model alernator.

Posted on Mar 22, 2011

  • 176 Answers

SOURCE: 1993 Chevy Silverado 4x4 1500

If you have no overdrive at all, and virtually no third, then it's time for an overhaul. The 3-4 clutches have failed, a common problem in this trans since 1981. Yes, 1981. Your trans is a 4L60-E that is computer controlled. In 1981 it was called a THM700-R4, and was hydraulically controlled. The input clutch drum is basically the same as it was in 1981, and the 3-4 clutches are prone to failure, usually around 130,000 to 150,000 kms (75,000 to 90,000 miles).

Posted on Apr 18, 2011

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Apr 07, 2009 | 2003 Chevrolet Silverado 2500HD

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