GM Service Manual Online
For 1990-2009 cars only

Instrument Cluster (IPC) System Check

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Close all doors.
  2. Safety belt unbuckled.
  3. Gear selector in PARK.
  4. Ignition switch to START, then to ON (do not start engine).

A bulb check of the following indicators is performed (the indicators illuminate briefly or stay ON until engine is started).

    • ABS
    • Air Bag
    • Battery Charge
    • Brake Warning
    • Check Gauges
    • Seat Belt
    • Security
    • Service Engine Soon
    •  Charge Indicator Inoperative in Starter and Charging.
    •  Diagnostic System Check - Theft Deterrent in Theft Deterrent.
    •  SIR Diagnostic System Check in SIR.
    • ABS Systems Check in Antilock Braking Systems.

2

Check Service Engine Soon indicator.

Service Engine Soon indicator illuminates.

Service Engine Soon indicator off. Powertrain On Board Diagnostic (OBD) System Check or Powertrain On Board Diagnostic (OBD) System Check in Engine Controls

3

  1. Buckle driver's safety belt.
  2. Check Fasten Safety Belt indicator.

Fasten Safety Belt indicator OFF.

Fasten Safety Belt Chime Always On .

4

Apply park brake.

Park brake indicator illuminates.

Brake Warning Indicator Inoperative in Brake Warning.

5

    • Operate LH turn signal.
    • Operate RH turn signal.

Turn indicators flash with turn signals.

6

  1. Cover the Ambient Light Sensor with a dark cloth.
  2. Turn headlamp switch to HEAD.

IPC illumination turns ON and dims to the setting on the dimmer control.

IPC illumination inoperative. Go to Interior Lights Dimming System Check in Lighting Systems.

7

Adjust instrument panel dimmer control.

IPC illumination varies.

IPC does not dim. Go to Interior Lights Dimming System Check in Lighting Systems.

8

Turn the high beam headlamps on.

High beam indicator illuminates.

Go to Exterior Lights System Check .

9

Start engine.

    • Engine cranks and starts.
    • Speedometer displays zero.

Engine does not start. Go to Diagnostic System Check - Theft Deterrent in Theft Deterrent.

10

Press the IPC control button RESET TRIP

The trip odometer resets to zero.

Driver Information System Check

11

Press the IPC control button RESET TRIP again

The trip odometer should switch to the Odometer display

Driver Information System Check

12

Check Fuel gauge.

Fuel gauge indicates correct fuel level.

Go to Fuel Gage Inaccurate or Inoperative .

13

Check Engine Temperature gauge.

Engine Temperature gauge indicates correct engine temperature.

Engine Coolant Temperature Gage Inaccurate or Inoperative .

14

Check tachometer.

Tachometer indicates correct engine speed.

Tachometer Inoperative .

15

Check Engine Oil Pressure gauge.

Engine Oil Pressure gauge indicates correct engine oil pressure.

Engine Oil Pressure Gage Inaccurate or Inoperative .

16

Check Battery Charge indicator.

Battery Charge indicator OFF.

Charge Indicator Always On in Starter and Charging.

17

Check Air Bag indicator.

Air Bag indicator OFF.

Air Bag indicator ON, go to SIR Diagnostic System Check in SIR.

18

Check ABS indicator.

ABS indicator OFF.

Diagnostic System Check in Antilock Brakes

19

Check Security indicator.

Security indicator OFF.

Security indicator ON. Go to Diagnostic System Check - Theft Deterrent in Theft Deterrent.

20

Cycle gear selector lever through all gear positions.

PRNDL displays the correct gear positions.

The park brake indicator turns OFF.

    • PRNDL Indicator Inoperative.
    •  Brake Warning Indicator Always On in Brake Warning.

21

Drive vehicle at 48 km/h (30 mph).

Speedometer and Odometer/Trip Odometer operate properly.

Go to Speedometer and/or Odometer Inoperative.

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