Step
| Action
| Normal Result(s)
| Abnormal Result(s)*
|
1
| Turn the ignition switch
to the RUN position.
| The following VF displays light:
| • | Heater and A/C programmer |
| • | Passenger temperature control |
|
Vacuum Fluorescent Display Inoperative - Heater and Air Conditioning (A/C) Control
|
2
| Place the
headlamp switch in the PARK position.
| The above VF displays dim and the following interior lights
light at the current dimming level:
| • | Door handle flood lamps (Buick) |
| • | Door switch flood lamps (Buick) |
| • | Fog lamp switch (Oldsmobile) |
| • | Headlamp switch (Buick) |
| • | Heater and A/C control |
| • | Panel dimming switch (Oldsmobile) |
| • | Passenger temperature control |
| • | Power mirror switch (Oldsmobile) |
| • | Power window switches (Oldsmobile) |
| • | Release switch (Oldsmobile) |
| • | Seat switches (Oldsmobile) |
| • | Seat/lock switches (Oldsmobile) |
| • | Shift select switch lamp (Oldsmobile) |
| • | Steering wheel controls |
| • | Traction control switch (Oldsmobile) |
| • | Trip odometer reset switch (Buick) |
|
|
3
| Operate
the dimming switch in both directions through the full range of the switch.
| In one direction
the lamps become dim. In the other direction the lamps become bright.
|
|
* Refer to the appropriate symptom diagnostic table for
the applicable abnormal result.
|
