GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Set the instrument cluster head-up display (HUD) dimmer switch to the MAX position.
  2. Turn the ignition switch to the RUN position.
  1. All of the segments of the digital speedometer and the following indicators will illuminate for approximately 3.5 seconds:
  2. • The turn indicators
    • The high beam indicator
    • The low fuel indicator
    • The radio functions
    • The coolant temperature indicator
    • The km/h indicator
    • The MPH indicator
  3. The speedometer will read 0 with the km/h or the mph indicator illuminated.

2

  1. Move the HUD display adjustment switch to the UP position.
  2. Move the HUD display adjustment switch to the DOWN position.

The display image moves from a minimum height to a maximum height.

Head Up Display (HUD) Image Height Adjustment Inoperative

3

  1. Move the HUD dimmer switch to the OFF position.
  2. Move the HUD dimmer switch to HIGH position.

The display image varies between a minimum intensity and a maximum intensity.

Head Up Display (HUD) Image Does Not Dim

4

  1. Move the English/metric switch on the trip calculator to the METRIC position.
  2. Move the English/metric switch on the trip calculator to the ENGLISH position.

The English/metric indicator toggles from MPH to km/h, and then, back to MPH.

Head Up Display (HUD) Does Not Switch Between English/Metric

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