Question about 2003 Chevrolet Silverado 2500HD

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A/c and heater fan has gone out. It went out once

A/c and heater fan has gone out. It went out once before, took to mechanic, he checked the power up to the blower, it had power, was going to order parts and it started working just fine again. I just had it running, A/C fan was fine, turned the vehic off and re-started immediately and the fan would not work again. I think that is what I did the first time as well.

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I had the same problem and the mechanic wanted to replace the relay. Turned out to be the wiring harness was burnt not the relay. I made him take out the new relay and put the old one back in. Works fine now.

Posted on Aug 15, 2010

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Change the relay or check the ground it is one or the other gm is notorious for this

Posted on Jul 16, 2010

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