Test Description
WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The numbers below refer to the step numbers on the diagnostic table.
- 2) - This step tests for blower motor operation in the OFF setting.
- 4) - This step tests for a possible short to ground on the blower motor control circuit.
- 5) - This step tests for a possible short to voltage in the blower motor supply circuit.