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.
- 3. This step tests for a blower motor that does not operate regardless of the desired blower motor speed.
- 4. This step tests for a blower motor that operates, yet does not accurately respond to the desired blower motor speed.