Transmission not shifting properly

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

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

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

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

MEGB2089