What could be wrong

Asked by Coolj1808 Sep 24, 2019 at 01:01 AM about the 2004 Chevrolet Trailblazer LS 4WD

Question type: Maintenance & Repair

My 2004 chevy trailblazer will not shift into 2nd
gear unless I let off of the gas and even then it
shifts hard. Once it goes into 2nd gear after that I
have no issues. What could I do to fix this??

1 Answer
11,225

FJ4072 answered 4 years ago

Worth a shot to check your throttle position sensor, which was my problem on my 06, for the exact problem. Bad thing, it's part of the throttle body, need to replace the whole throttle body. Use this form to narrow down, which is how I diagnosed mine. http://twincharlotte.com/blog/30-common-4l60e-transmission-problems-repair-charlotte-nc/

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