Test Description

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

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: Diagnostic System Check - HVAC Compressor Clutch Does Not Disengage (1 Of 2)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Diagnostic System Check - HVAC Compressor Clutch Does Not Disengage (2 Of 2)

Courtesy of GENERAL MOTORS CORP.