Question about 2003 Chevrolet TrailBlazer

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2003 Chevy TrailBlazer overheats when a/c is on

Changed the thermostat and serpintine belt. The dealer claims he had his mechanic change the fan clutch but the truck still overheats when you have the air on and driving below 55mph...when on the freeway, it's cool and no problems. As soon as you slow down, the temp gauge starts to go up. What else could the problem be?

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Hello sneadbilly and thank you for asking your question, on Fixya.

Here is a simple process that will walk you through a few steps that will pinpoint the overheating problem on your 2003 Chevrolet TrailBlazer, without even using any tools. It has helped millions of people, and I am certain that it will help you, because I wrote it for people like you. So here is the link to:
How to diagnose your overheating 2003 Chevrolet TrailBlazer

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Thanks for the vote, and good luck!

Posted on Dec 27, 2010

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