2007 silverado lost drive and 3 gear manually, 1 and 2 gear work.

Chez310

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Nov 15, 2024
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Usa
2007 Silverado 1500 4l60e new body style

I lost D and 3rd(when I manually engaged the option). The truck only revs up, and it does the same if I manually put it into 3rd gear.

P/N/R and manual one and manual two work fine.

I put a scanner on it, and I can test the solenoids. I also noticed that the manifold is getting the correct sequence when cycling through the gears.

There are no present codes. The only thing I see is that selector 2-3(b) stays activated the whole time and never deactivates through any gears.

I have deactivated the selenoid with the scanner and can get the truck to move in D.

Update: I have the tranny rebuild and the same issue.
 

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