Question about 1998 GMC Sierra
I beleive the resistor is failing and need to know how to replace it. I see the wire harness entering the firewall but when looking from the engine compartment I cannot see how to remove.
If you turn your ac on max, the radiator fan should run, if you turn it off, it should turn off. If it does not, than its more than a resistor, its your sensor that tells the fan to run or not. Your ecm, pcm may have gone bad
Posted on Dec 06, 2008
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Posted on Jan 02, 2017
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Feb 09, 2015 | GMC Sierra Cars & Trucks
The connector that plugs into the blower motor under the glove box became too hot and melted the plastic resulting in the a/c and heat not to work (this includes the windshield defroster). I've been looking up problems and solutions and found that this is a recurring problem with GMC and chevy trucks yet there has not been any recall, in fact the dealerships have an extremely overpriced kit to fix their faulty wiring. About 66,000 mi.
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