GM Service Manual Online
For 1990-2009 cars only
Table 1: Engine Control Module (ECM) Scan Tool Output Controls
Table 2: Head Up Display (HUD)
Table 3: Instrument Panel Cluster (IPC) Scan Tool Output Controls

Engine Control Module (ECM) Scan Tool Output Controls

Scan Tool Output Control

Additional Menu Selection(s)

Description

MIL

Engine Output Controls

The ECM illuminates the MIL when selected.

Head Up Display (HUD)

Scan Tool Output Control

Additional Menu Selection(s)

Description

Grid Test

Output Controls

The scan tool commands the HUD to perform a Grid test when selected.

Instrument Panel Cluster (IPC) Scan Tool Output Controls

Scan Tool Output Control

Additional Menu Selection(s)

Description

Display(s) Test

Special Functions

The instrument panel cluster (IPC) illuminates the indicators, the PRNDL segments, the odometer segments when you select On.

Coolant Gauge Sweep Test

Special Functions

The scan tool commands the IPC to sweep the coolant gage between minimum and maximum when selected.

Fuel Gauge Sweep Test

Special Functions

The scan tool commands the IPC to sweep the fuel gage between minimum and maximum when selected.

Oil Gauge Sweep Test

Special Functions

The scan tool commands the IPC to sweep the oil gage between minimum and maximum when selected.

Speedometer Gauge Sweep Test

Special Functions

The scan tool commands the IPC to sweep the speedometer gage between minimum and maximum when selected.

Tachometer Gauge Sweep Test

Special Functions

The scan tool commands the IPC to sweep the tachometer gage between minimum and maximum when selected.

Volt Gauge

Special Functions

The scan tool commands the IPC to sweep the volt gage between minimum and maximum when selected.