Daytime Running Lights (DRL) Control Module Replacement for Chevrolet Chevy C Cab/Chassis HD (GMT 400) 2005

The daytime running lamp (DRL) module circuit board is enclosed in a plastic case under the left side of the instrument panel.

Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.



2. Open the DRL module cover (1).
3. Remove the DRL module circuit board from the module using a suitable tool.

1. Install the DRL module circuit board to the module.
2. Close the DRL module cover (1).
3. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.