GM Service Manual Online
For 1990-2009 cars only

Instrument Panel

ABS Input: The scan tool displays On or Off. The state of the ABS indicator as commanded by the IPC.

Alternator Input Signal: The scan tool displays On or Off. The state of the Alternator indicator as commanded by the IPC.

Backlight Dimming: The scan tool displays a percentage. The state of the backlighting as commanded by the IPC.

Battery Voltage: The scan tool displays voltage.

Cruise Control: The scan tool displays On or Off. The state of the CRUISE indicator as commanded by the IPC.

Fuel Level: The scan tool displays gallons. The IPC monitors the fuel level.

Ignition Switch: The scan tool displays On or Off. The IPC monitors the state of the Ignition switch. A closed switch is displayed as On.

LCD Dimming: The scan tool displays the LCD display illumination in percentages. The IPC monitors the voltage the level of the LCD illumination.

Low Traction Input Signal: The scan tool displays Off or On. The IPC monitors the signal circuit of the traction control input circuit. An open switch is diplayed as Off.

Park Brake Switch: The scan tool displays pulled and released. The IPC monitors the park brake switch circuit. A open switch is displayed as released.

Park Lamp Switch: The scan tool displays On or Off. The IPC monitors the park lamp switch circuit. An open switch is displayed as Off.

Traction Control: The scan tool displays On or Off. The IPC monitors the traction control switch circuit. An open switch is displayed as Off.

Trip Computer Switch: The scan tool displays Inactive/Mode/Set/Down/Up. The IPC monitors the trip computer signal circuit. An open switch is displayed as Inactive.

Trip Computer Switch Voltage: The scan tool displays voltage. The IPC monitors the signal circuits. A normal switch voltage is 5 volts