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2003 CHEVROLET TRAILBLAZER
103,000 MILES
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SWILLIAMS9529
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  • 6 POSTS
i have a 2003 Chevorlet Trailblazer LS 4x4 with a straight 6cy motor. It runs fine except the fan runs sometimes. You can start it right up in the morning and the fan will run and it will sound like a jet plane taking off while your driving, then other times the fan wont come on. We just got the car and they said they changed out the fan clutch and the temp sensor, but idk why it does this. When the fan isnt running the car runs fine and RPMs stay low, but when it is on the RPMs run high. What could be causing this?
Jun 18, 2012 at 1:31 AM
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ASEMASTER6371
  • CAR REPAIR CONTRIBUTOR
  • 52,796 POSTS
there is a computer re flash for this exact issue. i have done a few of them and this update takes care of it.

Roy
Jun 18, 2012 at 1:36 AM
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SWILLIAMS9529
  • MEMBER
  • 6 POSTS
how do i go about getting it fixed?
Jun 18, 2012 at 2:18 AM
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ASEMASTER6371
  • CAR REPAIR CONTRIBUTOR
  • 52,796 POSTS
take it to the dealer and have them re flash the computer.

Roy
Jun 18, 2012 at 11:09 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.