My truck will not go in any other gear but first gear?

Tiny
JASON MCBRIDE2
  • MEMBER
  • 2006 GMC SIERRA
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 1,800,000 MILES
The truck will not go in any other gear but first gear.
Tuesday, August 23rd, 2022 AT 10:36 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,161 POSTS
It sounds like you have a gear range sensor that is not working, but to be sure we need to run the codes this guide will help. I have also included the gear range replacement instructions case you need it. you can get a code scanner from Amazon for about $20.00.

Here is a guide/video to show you how:

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

Here is a scanner link:

https://amzn.to/3Qi1SS6

Check out the diagrams (below). Please let us know what happens.
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Tuesday, August 23rd, 2022 AT 11:31 AM

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