Visual/Physical Inspection
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect for aftermarket devices which could affect the operation of the HVAC System. Refer to Checking Aftermarket Accessories in Wiring Systems.
- Inspect the system components which are easily accessible or visible for obvious damage or for conditions which could cause the symptom.
- Verify the A/C compressor clutch turns freely and is not seized.
- The A/C compressor will not operate in cold, outside air temperatures. Refer to Air Temperature Description and Operation .
- The following conditions may cause window fogging:
- A wet carpet
- High humidity
- An interior water leak
- A blocked drain tube to the A/C evaporator
- Maximum passenger capacity
- Blocked body pressure relief valves
- Inspect the air distribution system for causes of reduced airflow:
- An obstructed or dirty passenger compartment air filter
- Blocked or damaged air vents