SPONSORED LINKS

Not shifting

Tiny
19TRAVIS74
  • MEMBER
  • 2002 GMC SIERRA
  • V8
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
I recently changed fluid, filter, and seal. After doing so, now the truck will not shift. I am having to shift it manually from 2nd to drive. Is there a speed sensor in the transmission? When I was changing everything, I found a small part but the speed sensors I've found online do not look like the one I found.
SPONSORED LINKS
Monday, August 10th, 2009 AT 4:10 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

Please upload a picture of the part that you found. This can help us determine what might be the issue.

It is possible to have a disconnected shift solenoid, or something got bumped in the valve body.

Take a look at this guide, it covers the typical reasons:

https://www.2carpros.com/articles/automatic-transmission-problems

You might have to remove the pan to verify everything is connected on the shift solenoid. You could have a disconnected wire.

I have attached diagrams for your reference.

Please let me know if you have any questions.
Thank you.
Images (Click to make bigger)
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
+1
Thursday, November 18th, 2021 AT 10:11 AM

Please login or register to post a reply.

Related Transmission Not Shifting Content

VIEW MORE

Sponsored links