Wont shift at first 2008 chevy trailblazer than sometines it does

Asked by Beckylenick Aug 01, 2019 at 07:14 PM about the 2008 Chevrolet Trailblazer 1LT 4WD

Question type: Maintenance & Repair

Wont shift at first
start out idle high
and than after
awhile it shifts
and runs fine
2008 trailblazer

1 Answer
11,225

FJ4072 answered 4 years ago

Have your throttle position sensor checked out. Unfortunately, this part is integrated into the actual throttle body for our platform, so would need to replace the whole throttle body IF that's your issue. There are others that mess with this, like a stuck fan clutch.

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