Common first-generation Chevy Avalanche problems include a tailgate that won’t latch, a tailgate with a broken handle that won’t open, or faded plastic panels that need restoration. All vehicles have their common problems, so our experts went over the top problems owners experience with the Chevy Avalanche, some of their causes, and how to fix them.
I have a 2003 Chevy Avalanche 1500 and the fan abruptly stopped working for both heat and A/C. I know just enough about cars to be dangerous. So when the heat went out on my Chevy Avalanche that I purchased a week before, I knew I wanted to fix it myself. Turns out it’s common to have a Chevy truck with blower motor problems.
Disclaimer: That is definitely not me featured in the video above.
Trying to diagnose why the heater stopped blowing air, I turned to 1A Auto. I read an article on the 1A Blog about A/C failure. It was a thorough article on generic A/C issues but also covered when the fan stops working entirely, so I thought I could get some insight.
After removing the blower motor, I confirmed about 12v coming out of a 2-pin connector. I also hooked the motor directly to the battery and the fan started spinning, so I knew the problem wasn’t the blower motor. I didn’t have a way to test amps going through the wire when I changed the resistance. At this point, I assumed the problem was with the control panel but wasn’t sure how to troubleshoot it.
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