GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Start the engine.
  2. Place the gear selector lever in PARK.
  3. Adjust the air delivery locations with the control assembly.

The air discharge locations charge according to the setting on the control assembly.

Air Delivery Improper

2

  1. Start the engine.
  2. Place the gear selector lever in PARK.
  3. Adjust the rear air delivery locations with the rear control assembly.

The rear air discharge locations charge according to the setting on the rear control assembly.

Air Delivery Improper - Auxiliary

3

  1. Start the engine.
  2. Place the gear selector lever in PARK.
  3. The outside air temperature is displayed on the driver information center.

The outside air temperature displayed on driver information center matches actual outside air temperature.

Air Temperature Display Inaccurate

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.