Transmission not shift into third gear or reverse, after warming up?

1999 CHEVROLET CAMARO
79,000 MILES • 5.7L • V8 • 2WD • AUTOMATIC
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CAMARO DAN
  • MEMBER
  • 1 POST
From park it will go into reverse after warmup. Will go into 1 and 2 but nothing when put into 3 or OD.
Aug 2, 2022 at 9:29 AM
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STRAILER
  • CAR REPAIR CONTRIBUTOR
  • 54,189 POSTS
The first thing to do is check the fuses, transmission fluid level and run the codes.

Here are guides to help us:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

and

https://www.2carpros.com/articles/how-to-check-and-add-transmission-fluid

It sounds like the fluid pressure control solenoid # 377 is not working, I have included its location in the diagrams as well. Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
Aug 3, 2022 at 11:18 AM
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