WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: HVAC Compressor Clutch Does Not Engage Diagnosis (Steps 1-4)
Courtesy of GENERAL MOTORS CORP.
Fig 2: HVAC Compressor Clutch Does Not Engage Diagnosis (Steps 5-15)
Courtesy of GENERAL MOTORS CORP.
Fig 3: HVAC Compressor Clutch Does Not Engage Diagnosis (Steps 16-28)
Courtesy of GENERAL MOTORS CORP.
Fig 4: HVAC Compressor Clutch Does Not Engage Diagnosis (Steps 29-34)