Will not shift past 2nd gear?

Tiny
DRKSTW
  • MEMBER
  • 2005 CHEVROLET TRAILBLAZER
My trailblazer will not shift past 2nd gear, and my speedometer does not read accurately all the time
Wednesday, May 14th, 2008 AT 10:08 PM

1 Reply

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
More than likely this is a speed sensor issue.

So, let's start with testing a speed sensor using this guide. This guide is for a wheel speed sensor, but the process is the same.

https://www.2carpros.com/articles/abs-wheel-speed-sensor-test

Please run through this and use the info below from the manual to do this testing and replace it if needed.

Let me know if you have questions. Thanks
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Tuesday, March 15th, 2022 AT 8:39 AM

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