Scan Tool Data Definitions: Outputs

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

High Beams: The scan tool displays the commanded state of the high beam relay. The scan tool displays On when the BCM allows the high beam relay to go to ground activating the high beam headlamps.

Low Beams: The scan tool displays the commanded state of the low beam relay. The scan tool displays ON when the BCM allows the high beam relay to go to activate the low beam headlamps.

Park Lamp Relay: The scan tool displays the commanded state of the park lamp relay. The scan tool displays ON when the BCM allows the park lamp relay to activate the park lamps.

Dimming Level: The scan tool displays the commanded state of the interior dimmable lamps. The scan tool displays a percentage based on the position of the thumb wheel.

Daytime Running Lamps: The scan tool displays the commanded state of the daytime running lamps (DRL). The scan tool displays ON when the BCM allows the DRL relay to activate the DRL.