Visual/Physical Inspection: Notes

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.

Inspect for aftermarket devices which could affect the operation of the HVAC System. Refer to CHECKING AFTERMARKET ACCESSORIES .
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