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Rebuilt turbo 350 no reverse

I just rebuilt the turbo 350 in my pickup and have no reverse gear. When I shift into reverse the output spins but will not move the truck. It will move forward but does not seem to shift automatically. I have disassembled the trans a second time and it seems correct but obviously I am missing something. Any testing I can do? Any possibility it is in the valve body?

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  • jdslastride May 22, 2009

    My turbo 350 was difficult to get into gear and when I pushed the shifter harder, it finally went to neutral, but wanted to go forward. Same with reverse. No reverse, but wants to go forward. All 5 stations but Park want to go forward. I'm stumped. Time for a 200-4r.

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Posted on Jan 02, 2017

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  • 9 Answers

SOURCE: 1997 Chevy pickup

It is a very common issue If you have a 4L60E, you may have a problem with the valve body. As the valves bores get worn hydraulic pressure is compromised, there are fixes out there for this transmission, check out www.sonnax.com they have many parts to help resolve the transmission of these problems. Also you should check or replace your separator plate as sometimes the check balls that regulate the hydraulics of the transmission become stuck onto the plate. I've done quite a few of this model transmission and its almost always the valve body problem. HOWEVER FIRST CHECK YOUR FLUID CONDITION, if the fluid is good and there isn't a large amount of debris in the pan you should try to either get a new valve body or have your rebuilt with the parts from sonnax that eliminate these hard shift problems.

Posted on Aug 31, 2008

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  • 158 Answers

SOURCE: no reverse after rebuild on 4L60E Transmission from 1995 GMC Sono

There isn't a modulator on this trans as it is electronic

You can have first gear going forwrd but no reverse. It is possible. The low/ reverse clutch isn't needed to go forward.

Posted on Apr 02, 2009

  • 1 Answer

SOURCE: 93 chevy 1500 4wd trans. shift problems.

Also check your detent cable if is not adjusted correctly it will not shift properly

Posted on Aug 16, 2009

jaysonemanme
  • 500 Answers

SOURCE: F150 - won't move in reverse or drive out of 1st gear

i have seen those trannys go at 30,000-

Posted on Aug 19, 2009

Blessedbygod
  • 85 Answers

SOURCE: 31th 470 a670 trans won't shift from second to third

I am far from a trans. specialist but this sounds like a foreign body (dirt maybe) got in the valve body.

Posted on Oct 14, 2009

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