GM Service Manual Online
For 1990-2009 cars only

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 Engine Electrical
    •  Charge Indicator Always On in Engine Electrical
    •  SECURITY Warning Not Operating Properly in Theft Deterrent
    •  SRS Diagnostic System Check in SRS
    •  Diagnostic System Check - ABS in Antilock Braking Systems

2

Check Service Engine Soon indicator.

Service Engine Soon indicator illuminates.

Service Engine Soon indicator off. Refer to the appropriate procedure:

    •  Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 2.2L
    •  Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 4.3L

3

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

Fasten Safety Belt indicator OFF.

Instrument Cluster Inoperative

4

Apply park brake.

Park brake indicator illuminates.

Brake Warning Indicator Inoperative in Hydraulic Brakes

5

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

Turn indicators flash with turn signals.

Instrument Cluster Inoperative

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. Refer to Interior Lights Dimming System Check in Lighting Systems.

7

Adjust instrument panel dimmer control.

IPC illumination varies.

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

8

Turn the high beam headlamps on.

High beam indicator illuminates.

Instrument Cluster Inoperative

9

Start engine.

    • Engine cranks and starts.
    • Speedometer displays zero.

Engine Cranks/Cranks Slowly, but Does Not Start in Engine Electrical

10

Check Fuel gauge.

Fuel gauge indicates correct fuel level.

Fuel Gage Inaccurate or Inoperative

11

Check Engine Temperature gauge.

Engine Temperature gauge indicates correct engine temperature.

Engine Coolant Temperature Gage Inaccurate or Inoperative

12

Check tachometer.

Tachometer indicates correct engine speed.

Tachometer Inoperative

13

Check Engine Oil Pressure gauge.

Engine Oil Pressure gauge indicates correct engine oil pressure.

Engine Oil Pressure Gage Inaccurate or Inoperative

14

Check Battery Charge indicator.

Battery Charge indicator OFF.

Charge Indicator Always On in Engine Electrical

15

Check Air Bag indicator.

Air Bag indicator OFF.

Air Bag indicator ON. Refer to SRS Diagnostic System Check in SRS.

16

Check ABS indicator.

ABS indicator OFF.

ABS indicator ON. Refer to Diagnostic System Check - ABS in ABS.

17

Check Security indicator.

Security indicator OFF.

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

18

Cycle gear selector lever through all gear positions.

PRNDL displays the correct gear positions.

The park brake indicator turns OFF.

    •  Brake Warning Indicator Always On in Hydraulic Brakes

19

Drive vehicle at 48 km/h (30 mph).

Speedometer and Odometer/Trip Odometer operate properly.

Speedometer and/or Odometer Inaccurate

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