'05 GMC Sierra air compressor question
lefty1120
02-04-2009, 08:40 AM
'05 GMC Sierra 5.3L
with the air conditioner not selected, but heat on
should the air compressor clutch intermittently engage???
with the air conditioner not selected, but heat on
should the air compressor clutch intermittently engage???
2000CAYukon
02-04-2009, 09:58 PM
Heat or Defrost? It is normal to come on if Defrost is selected. It helps removing moisture from the windshield and keep the compressor seals from drying out.
//2000CAYukon
//2000CAYukon
lefty1120
02-05-2009, 10:18 AM
Heat....blowing to the floor
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