Test Description

WARNING: This page is about a different car, the 2003 GMC Safari and 2003 Chevrolet Astro. 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 any speed setting.
3. This step tests for voltage at the blower motor.
4. This step tests for a possible open in the blower motor resistor assembly ground circuit.
5. This step tests for output voltage from the blower motor switch.

Fig 1: Blower Motor Inoperative (1 Of 2)
Courtesy of GENERAL MOTORS CORP.

Fig 2: Blower Motor Inoperative (2 Of 2)
Courtesy of GENERAL MOTORS CORP.