C 3500 Truck 2WD V8-6.0L VIN U (2001)
Clearance Lamp: Description and Operation
The clearance lamps are turned on when the headlamp switch is placed in the PARK or ON position or anytime the headlights are requested. The PARK
LPS 30 A fuse in the engine wiring harness junction block supplies battery positive voltage to both the park lamp relay switch contacts and the park lamp
coil circuit. The Body Control Module (BCM) provides a ground or control circuit to the park lamp relay coil circuit. When the park lamps are turned on
the BCM energizes the park lamp relay. Current flow is from the park lamp relay to the INT PRK 10 A fuse, and to clearance lamps. The clearance
lamps are grounded at G200.
