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

Instrument Panel Cluster (IPC)

Scan Tool Output Control

Additional Menu Selection(s)

Description

Lamp Test

Displays Test

The IPC illuminates all of the display segments when you select On.

IPC Gages

Displays Test

The IPC drives all gages to the maximum physical position when you select On. The IPC drives all gages to the minimum physical position when you select Off.

Powertrain Control Module (PCM)

Scan Tool Output Control

Additional Menu Selection(s)

Description

Engine Output Controls

Fuel Gage

The PCM drives the fuel gage to the maximum physical position when you select On. The PCM drives the fuel gage to the minimum physical position when you select Off.

Engine Output Controls

Glow Plug

The ECM commands the glow plug On and Off.

Engine Output Controls

Malfunction Indicator Lamp (MIL)

The PCM/ECM commands the MIL On and Off.

Engine Output Controls

Oil Life Reset

The ECM resets oil life monitor to the desired percent.