GM Service Manual Online
For 1990-2009 cars only
Accessory 1: Input from ignition switch ACCESSORY circuit. Used to determine power mode. Hot in ACCESSORY and RUN.

Door Jamb Switch: Input showing state of the passenger doors.

Driver Door Switch: Input from the driver door indicating door status.

Ignition 0: Input to the control module from the ignition switch indicating the Ignition 0 position. Switch closed (HOT) in ignition switch positions Unlock, Accessory, Run, Crank.

Ignition 1: Input to the control module from the ignition switch indicating the Ignition 1 position. Switch closed (HOT) in ignition switch positions Run, Crank.

RAP Output: Output indicates state that the control module has commanded.

Trunk Ajar Switch: Indicates state of switch used to control lamp in trunk and IPC indicator.