No third gear

2005 GMC ENVOY

188,000 MILES • 4.2L • 6 CYL • 4WD • AUTOMATIC

STARLORD1976

MEMBER
173 POSTS

I already changed fluid and filter. When i drive down the road it will hit first and second with no problem but when it hits third it just revs up and will not go into gear. Is my transmission shot or is there anything else I can try?

Dec 9, 2017 at 9:52 AM

JIS001

✓ASE Certified Mechanic
3,412 POSTS

A complete tear down is required to find the point of failure. Most likely clutches are worn or maybe a bad band? At this point you may want to look into replacing the transmission now.

Dec 10, 2017 at 4:08 PM

STRAILER

✓ASE Certified Mechanic
54,832 POSTS

It sounds like you have a problem with the second to third shift solenoid. Here is a guide to help you remove the transmission pan so you can do the job:

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

Below are some guides to help you see what the job will be like. Also I have the transmission wiring diagram to help you see which solenoids needs replacement.

Let us know what happens and please upload pictures or videos of the problem.

Cheers, Ken

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
Click here to log in and view diagram.

Dec 10, 2017 at 4:14 PM

STARLORD1976

MEMBER
173 POSTS

I also got a P0894 code does that mean anything? Also, the person that had the car drove it low on transmission fluid.

Dec 10, 2017 at 5:29 PM

STRAILER

✓ASE Certified Mechanic
54,832 POSTS

That is a bad sign. It looks like the transmission will need to be replaced or rebuilt.

Dec 15, 2017 at 1:40 PM

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