Question about 1999 GMC Suburban
you can try and jump the high pressure limiter switch on the expansion tank, sometimes they get a bubble. Its the silver cylinder looking thing near the firewall. follow the cooling pipes from the compressor back to the tank if theres a question, on the top or near it will be two wires going into it, undo that switch housing connector and hook a jumper wire up there. switch may have to be replaced there. dont run that for any length of time with the jumper, just to diagnose.
Posted on Jul 21, 2009
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Posted on Jan 02, 2017
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