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Transmission not shifting properly

Tiny
MEGB2089
  • MEMBER
  • 2003 CHEVROLET TRAILBLAZER
  • V6
  • 4WD
  • AUTOMATIC
  • 233,000 MILES
When I go from 2nd into 3rd gear my RPMs rev really high and the truck does not shift into gear. I have to let off the gas and wait for it to fall back before I can press on the gas and it go into gear. This is the only gear it does it to.
Wednesday, March 31st, 2021 AT 7:01 AM

6 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

This could be the 2-3 shift solenoid not working correctly. You will need to drop the pan and filter to access the solenoid.

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

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

I attached the procedure and pictures for you below. When one of these solenoids fails, they usually set a code with a check engine light.

Roy
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Wednesday, March 31st, 2021 AT 8:07 AM
Tiny
MEGB2089
  • MEMBER
  • 3 POSTS
I forgot to mention it is throwing 2 codes. One is p0171 and p0442.
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Wednesday, March 31st, 2021 AT 8:31 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Neither one of those is connected to the transmission.

We will deal with them on another question. We can only deal with one issue at a time per question. You can start a new question with those codes and I will be happy to help

Roy
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Wednesday, March 31st, 2021 AT 8:36 AM
Tiny
MEGB2089
  • MEMBER
  • 3 POSTS
Okay, I won't worry about those codes for now. Thank you.
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Wednesday, March 31st, 2021 AT 11:54 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You are welcome.

Always glad to help.

Roy
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Wednesday, March 31st, 2021 AT 12:09 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,269 POSTS
Hi,

The person never provided a fix for the issue. Sorry about that. I believe I am working with you on a different post. If that is correct, I'll see you on that thread.

Joe
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Tuesday, May 9th, 2023 AT 7:53 PM

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