GM Service Manual Online
For 1990-2009 cars only
Table 1: Body Control Module (BCM)
Table 2: Driver Door Switch
Table 3: Export Body Control Module (XBCM)
Table 4: Instrument Panel Cluster (IPC)
Table 5: Passenger Door Switch

Body Control Module (BCM)

Scan Tool Output Control

Additional Menu Selection(s)

Description

Backup Lamps

Exterior Lighting

The Body Control Module (BCM) activates the backup lamp relay when you select ON. The backup lamps illuminate for 5 seconds or until commanded OFF.

DRL

Exterior Lighting

The BCM activates the daytime running lamps (DRL) relay when you select ON. The DRL illuminate for 5 seconds or until commanded OFF.

Fog Lamps

Exterior Lighting

The BCM activates the fog lamps relay when you select ON. The fog lamps illuminate for 5 seconds or until commanded OFF.

High Beams

Exterior Lighting

The BCM activates the high beam relay when you select ON. The high beam headlamps illuminate for 5 seconds or until commanded OFF.

LF Turn Signal

Exterior Lighting

The BCM activates the left front turn signal lamps when you select ON. The turn signal lamps illuminate for 5 seconds or until commanded OFF.

Low Beams

Exterior Lighting

The BCM activates the low beam relay when you select ON. The low beam headlamps illuminate for 5 seconds or until commanded OFF.

LR Turn Signal

Exterior Lighting

The BCM activates the left rear turn signal lamps when you select ON. The lamp illuminates for 5 seconds or until commanded OFF.

Parking Lamps

Exterior Lighting

The BCM activates the park lamp relay when you select ON. The park lamps illuminate for 5 seconds or until commanded OFF.

RF Turn Signal

Exterior Lighting

The BCM activates the right front turn signal lamps when you select ON. The turn signal lamps illuminate for 5 seconds or until commanded OFF.

RR Turn Signal

Exterior Lighting

The BCM activates the right rear turn signal lamps when you select ON. The lamp illuminates for 5 seconds or until commanded OFF.

Courtesy Lamp

Interior Lighting

The BCM activates the interior lamps outputs for 5 seconds when you select ON. The dome, footwell, and courtesy lamps illuminate for 5 seconds or until commanded OFF.

Incandescent Dimming

Interior Lighting

The BCM activates the interior incandescent type component lamps from full dim to full bright for 5 seconds or until commanded OFF.

LED Dimming

Interior Lighting

The BCM activates the interior LED type component lamps from full dim to full bright for 5 seconds or until commanded OFF.

Driver Door Switch

Scan Tool Output Control

Additional Menu Selection(s)

Description

Integrated Sw. Backlighting Test

Light Test

The driver door switch module activates the switch backlighting when you select ON. The switch backlighting illuminates for 10 seconds or until commanded OFF.

Non-Integrated Backlighting Test

Light Test

The driver door switch module activates the switch backlighting that is separate from the module when you select ON. The switch backlighting illuminates until commanded OFF.

Puddle/Courtesy Lamp

Light Test

The driver door switch module activates the puddle and courtesy lamps when you select ON. The lamps remain illuminated for 10 seconds or until commanded OFF.

Export Body Control Module (XBCM)

Scan Tool Output Control

Additional Menu Selection(s)

Description

Rear Fog Lamps

Output Controls

The XBCM activates the rear fog lamps when you select ON. The rear fog lamps illuminate until commanded OFF.

Trailer Fog Lamps

Output Controls

The XBCM activates the trailer fog lamps circuit when you select ON. The trailer fog lamps circuit remains energized until commanded OFF.

Instrument Panel Cluster (IPC)

Scan Tool Output Control

Additional Menu Selection(s)

Description

Dimming

Special Functions

The Instrument Panel Cluster (IPC) will dim the PRNDL and DIC display for 5 seconds or until commanded OFF.

Passenger Door Switch

Scan Tool Output Control

Additional Menu Selection(s)

Description

Integrated Sw. Backlighting Test

Light Test

The passenger door switch module activates the switch backlighting when you select ON. The switch backlighting illuminates for 10 seconds or until commanded OFF.

Non-Integrated Backlighting Test

Light Test

The passenger door switch module activates the switch backlighting that is separate from the module when you select ON. The switch backlighting illuminates until commanded OFF.

Puddle/Courtesy Lamp

Light Test

The passenger door switch module activates the puddle and courtesy lamps when you select ON. The lamps remain illuminated for 10 seconds or until commanded OFF.