Question about 1992 GMC Sierra K1500
If you have no power (12v) to the power wire at the A/C compressor clutch and have jumpered all of the switches then you need to check for power coming out of the A/C switch on the dash. Also there might be a pressure switch on the back of the compressor that you can jumper also. You can also check A/C compressor relay in the under hood fuse/relay box. There might be a fuse in the under hood fuse/relay box for the A/C too. Hope this helps.
Posted on Apr 23, 2009
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Posted on Jan 02, 2017
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