Symptom Tests: Notes
WARNING: This page is about a different car, the 2002 GMC Savana Special, 2002 GMC Savana Camper Special, 2002 GMC Savana, and 2002 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
Before testing system, visually inspect easily accessible system components for damage or defects. Inspect wiring harness and connections for damage and poor connections. Check aftermarket devices which could affect system operation. Verify that compressor clutch turns freely and is not seized.
Refer to symptom and perform corresponding test to diagnose problem. See SYMPTOM TEST DIRECTORY table.
SYMPTOM TEST DIRECTORY
| Symptom | See Test |
|---|---|
| Air Delivery Improper | A |
| Air Delivery Improper - Cargo Van with Auxiliary HVAC | B |
| Air Delivery Improper - Passenger Van with Auxiliary HVAC | C |
| Blower Motor Always On | D |
| Blower Motor Inoperative | E |
| Blower Motor Malfunction | F |
| Blower Motor Always On - with Auxiliary Heater Only or Cargo Van with Auxiliary HVAC | G |
| Blower Motor Always On - Passenger Van with Auxiliary HVAC | H |
| Blower Motor Inoperative - Auxiliary | I |
| Blower Motor Malfunction - Auxiliary | J |
| Compressor Clutch Does Not Disengage | K |
| Compressor Clutch Does Not Engage - 6.5L Engine | L |
| Compressor Clutch Does Not Engage - Except 6.5L Engine | M |
| Defrosting Insufficient | N |
| Too Cold In Vehicle | O |
| Too Cold In Vehicle - Cargo Van with Auxiliary HVAC | P |
| Too Cold In Vehicle - Cargo Van with Auxiliary Heater | Q |
| Too Cold In Vehicle - Passenger Van with Auxiliary HVAC | R |
| Too Hot In Vehicle | S |
| Too Hot In Vehicle - Cargo Van with Auxiliary HVAC | T |
| Too Hot In Vehicle - Cargo Van with Auxiliary Heater | U |
| Too Hot In Vehicle - Passenger Van with Auxiliary HVAC | V |