RepairPal's independent, master mechanics track down the best of the best in auto repair. Learn more »
Get the latest advice about your car
the clutch on my a/c clicks off intermittently when I turn on the a/c. It will not run long enought for the compressor to come on. What is the problem?
You may have a faulty pressure cycling switch, located on the a/c accumulator of your 1999 GMC Sierra 1500. If you tap lightly on the pressure switch with a screwdriver handle and the compressor turns on, replace the switch.
Q&A > GMC > 2005 GMC Sierra 1500
Q&A > GMC > 2000 GMC Sierra 1500
Q&A > GMC > 2004 GMC Sierra 1500
Q&A > GMC > 1999 GMC Sierra 1500