GM Service Manual Online
For 1990-2009 cars only
Table 1: Body Control Module (BCM)
Table 2: Instrument Panel Cluster (IPC)

Body Control Module (BCM)

Scan Tool Output Control

Additional Menu Selection(s)

Description

I/P Illumination Lamps

Output Control/Lamp Test

The IPC from 0-100% when you select INCREASE or DECREASE by 20% increments.

Key Minder

Output Control/Chime Test

The BCM turns the key in ignition reminder chime on when you select ON. The key in ignition reminder chime should stay on until commanded OFF.

Lights On Minder

Output Control/Chime Test

The BCM turns the lights on reminder chime on when you select ON. The lights on reminder chime should stay on until commanded OFF.

Occupant Restraint

Output Control/Chime Test

The BCM turns the fasten safety belt chime on when you select ON. The fasten safety belt chime should stay on until commanded OFF.

Instrument Panel Cluster (IPC)

Scan Tool Output Control

Additional Menu Selection(s)

Description

Lamp and Gauge Check

--

The IPC illuminates the following indicators when you select ON:

    • ABS
    • BRAKE
    • Change Engine Oil
    • Charge
    • DRL
    • Engine Coolant Temperature
    • Fasten Safety Belt
    • High Beam
    • Liftgate Ajar
    • Low Fuel
    • Low Oil Pressure
    • Low Coolant Level
    • Low Traction
    • Low Washer Fluid Level
    • MIL
    • Reduced Power (L81)
    • Security
    • Service Vehicle Soon
    • Upshift Indicator (manual transmission)

The IPC drives the following gages to maximum position when you select ON:

    • Engine Coolant Temperature Gage
    • Fuel Gage
    • Speedometer
    • Tachometer

The indicators should stay illuminated and all gages remain at maximum until commanded OFF. When commanded OFF, the indicators should turn OFF and all gages should remain at the minimum position until the test is exited or commanded ON.