Test Description

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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).

Fig 1: Diagnosis Procedure HVAC Compressor Clutch Does Not Disengage (Step 1 To 8)
Courtesy of GENERAL MOTORS CORP.

Fig 2: Diagnosis Procedure HVAC Compressor Clutch Does Not Disengage (Step 9 To 13)
Courtesy of GENERAL MOTORS CORP.