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GMC Truck
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2002
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Envoy 2WD L6-4.2L VIN S
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Heating and Air Conditioning
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Symptom Related Diagnostic Procedures
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Symptoms - HVAC System - Manual
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Compressor Clutch Does Not Disengage
Compressor Clutch Does Not Disengage
TEST DESCRIPTION
Steps 1-9:
Steps 10-14:
The number below refers to the step number on the diagnostic table.
2.
These actions will disable the HVAC control module output to powertrain control module (PCM).