Question about 1990 GMC Sierra
I have a 1990 GMC Sierra that has no power going to the controls for the heating and air conditioning. I checked the fuse and it was fine, replaced it anyways but still no power. Not sure if it is related but the battery was dead so we had to jump it to get it going. New battery but every once in a while (if not driving every day) the battery drains.
To answer you draining power problem, check your altinator, it can be on its way out
Posted on Dec 28, 2008
Folliottfami:I take you to mean that the blower just does not run. Your problem may have something to do with the motor being bad, or a wire or terminal between the relay/resistor and the motor breaking down and maybe burnt off. I can't say what is draining your battery though. Those problems usually stem from a light, such as the one in the glovebox, staying on.
Guest:: your problem may be similar. Inspect the wires and terminations in the area of the relay/resistor assembly.
Posted on Dec 19, 2008
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Posted on Jan 02, 2017
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