Headlamp Leveling-Export
WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
Voltage is supplied to the headlamp leveling switch through the IGN E fuse in the underhood fuse block. The headlamp leveling actuators are also powered by the same fuse but from a different terminal location in the underhood fuse block than the headlamp leveling switch. The headlamp leveling switch varies the amount of current to the actuators causing them to move simultaneously up or down to each selected position. Ground for the actuators and the switch are supplied by G203.