GM Service Manual Online
For 1990-2009 cars only
Table 1: Instrument Panel Cluster (IPC)
Table 2: Engine Control Module (ECM) 4.6L (LH2), 3.6L (LY7)

Instrument Panel Cluster (IPC)

Scan Tool Output Control

Additional Menu Selection(s)

Description

Display(s) Test

Output Controls

The IPC illuminates all of the display segments and sweeps all gage pointers when On is selected.


Engine Control Module (ECM) 4.6L (LH2), 3.6L (LY7)

Scan Tool Output Control

Additional Menu Selection(s)

Description

MIL

Engine Output Controls

The ECM commands the MIL indicator on and off.