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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 848 (HVAC Systems - Automatic) >> Diagnostic Information and Procedures >> Too Hot In Vehicle >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. 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

  1. 7. This test is to ensure A/C system is operating normally.
  2. 10. The aspirator tube connects to the rear of the HVAC control module. The aspirator tube is used to draw air past the inside air temperature sensor.
Fig 1: Too Hot in Vehicle Diagnosis (Steps 1-7)
G01499251Courtesy of GENERAL MOTORS CORP.
Fig 2: Too Hot In Vehicle Diagnosis (Steps 8-17)
G01499252Courtesy of GENERAL MOTORS CORP.
Fig 3: Too Hot In Vehicle Diagnosis (Steps 18-21)
G01499253Courtesy of GENERAL MOTORS CORP.