GM Service Manual Online
For 1990-2009 cars only

Object Number: 1839837  Size: A3

The vehicle has an electronic keyless ignition with push-button start.

In order to shift out of P (Park), the vehicle must be running or in OFF/ACCESSORY mode and the regular brake pedal must be applied.

(START): Press while your foot is on the brake to start the engine. The shifter must be in P (Park) or N (Neutral) to start the engine and the keyless access transmitter must be in the vehicle for the ignition to work.

Acc. (OFF/ACCESSORY): When this button is pressed, the engine will turn off even if the shifter is not in P (Park). If the shifter is in P (Park), the ignition mode will change to Retained Accessory Power (RAP), if all doors are closed. The ignition mode will change to off, if a front door is opened. See Retained Accessory Power (RAP) for more information. If the shifter is not in P (Park), the ignition mode will change to Acc. See Shifting Into Park . When the engine is off, press this button to place the vehicle in accessory mode. ACCESSORY MODE ON will display on the Driver Information Center (DIC). This mode allows you to use things like the radio and the windshield wipers while the engine is off. Use accessory mode if you must have the vehicle in motion while the engine is off, for example, if the vehicle is being towed. If the door is open while in accessory mode, the key in reminder chime will sound continuously. If the push-button start is not working, the vehicle may be near a strong radio antenna signal causing interference to the keyless access system. See DIC Warnings and Messages for more information. After being in ACCESSORY mode for about 20 minutes, the vehicle will automatically enter RAP or will turn off, depending on if the doors are opened or closed.