GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1998 🢒 Intrigue 🢒 Body and Accessories 🢒 Instrument Panel, Gauges, and Console 🢒 Interior Lights Dimming System Check

Step

Action

Normal Result(s)

Abnormal Result(s)*

1
  1. Turn the I/P lamp dimmer switch to the MAX position.
  2. Turn the ignition switch off.
  3. Turn the headlamp switch to the PARK position.

The following lamps illuminate at full intensity:

    • I/P back lights
    • Steering wheel control back lights.
    • Radio back lights
    • HVAC panel bak lights.
    • Traction/Cruise/Hazard back lights.
    • Front window switch back lights.
    • Door lock switch back lights.
    • I/P lamp dimmer switch back lights.
    • Trip odometer reset back lights.
    • Fog lamp switch back lights.
    • Outside remote control rearview mirror switch back lights.
    • Traction control.

2

Turn the I/P lamp dimmer switch slowly to the minimum position.

The brightness of all the above (step 1) mentioned lamps will slowly decrease.

3
  1. Release the park brake.
  2. Add light source to the daytime running lamps ambient light sensor.
  3. Turn the I/P lamp dimmer switch to the MAX position.
  4. Turn the ignition switch on.
  5. Turn the headlamp switch to the OFF position.
    • HVAC display (CJ2) illuminates.
    • Radio VF display illuminates.
    • Odometer display illuminates.
    • PRNDL display illuminates.
    • No dimmer function.

Note: The automatic transaxle control position indicator bulb illuminates anytime the ignition switch is the ACC position or ON position.

Vacuum Fluorescent Displays Do Not Change Intensity - All

4
  1. Turn the ignition switch off.
  2. Cover the daytime running lamps ambient light sensor with a dark cloth.
  3. Turn the ignition switch on.
    • All step 1 normal results remain the same.
    • HVAC display (CJ2) illuminates.
    • Radio VF display illuminates.
    • Odometer display illuminates.
    • Automatic transaxle control position indicator bulb illuminates.

5

Auto Headlamps:

Turn the I/P lamp dimmer switch slowly to the minimum position.

The brightness of all step 4 normal results will slowly decrease.

Note: The automatic transaxle control position indicator bulb illuminates anytime the ignition switch is the ACC position or on, and it does not dim.

6

Parade Mode:

  1. Turn the ignition switch off.
  2. Add light source to the daytime running lamps ambient light sensor.
  3. Turn the I/P lamp dimmer switch to the MAX position.
  4. Turn the ignition switch on.
  5. Turn the headlamp switch to the PARK position.
  6. Turn the I/P dimmer switch past the MAX position to the first detent.
    • All step 1 normal results remain the same.
    • HVAC display (CJ2).
    • Radio VF display.
    • Odometer display.
    • PRNDL display.

Vacuum Fluorescent Displays Do Not Change Intensity - All

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