ANSWERS: 3
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Gremlins. I bet you're a victim of a computer failure. Nothing is as direct as once was. Best bet is a shop with analyzer to point out the problem.
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My 2003 GMC Envoy is doing the same thing. Did you figure out what was wrong?
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not a computer problem...through extensive reading and finally diving in to fix this same problem on my 03 Envoy...it is either your blower motor($65) or blower motor resistor($35)...could possibly be both. either way...for about $100...this is an easy fix. buy the parts online or at NAPA or your local auto parts store...the dealership will rape you on the price.
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