Test Description

WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.

The number(s) below refer to the step number(s) on the diagnostic table.

12. The voltage will vary between 0-12 volts during normal operation. The HVAC control module connector must be connected during this step.

Fig 1: Too Cold in Vehicle (1 Of 2)
Courtesy of GENERAL MOTORS CORP.

Fig 2: Too Cold in Vehicle (2 Of 2)

Courtesy of GENERAL MOTORS CORP.