Service Procedure
Service ProcedureDRL Jumper Kit and Park/Turn Signal/DRL Bulb Installation
1. Open the hood.
2. Pull up on headlamp assembly retaining pins. Remove the pins.
3. Position the headlamp assembly away from the vehicle to access the headlamp electrical connector.
4. Disconnect the forward lamp harness electrical connector from the headlamp assembly.
5. Remove the park/turn signal/DRL bulb access cover by rotating the cover counterclockwise.
6. Remove the park/turn signal/DRL bulb socket from the headlamp housing by rotating the socket counter clockwise.
7. Gently pull the park/turn signal/DRL bulb from the socket. Discard old bulb.
8. Install the new park/turn signal/DRL bulb (P/N 15233607) into the socket.
9. Install the park/turn signal/DRL bulb socket into the headlamp housing by rotating the socket clockwise.
10. Install the park/turn signal/DRL bulb access cover by rotating it clockwise.
11. Perform steps 2-10 for opposite headlamp assembly.
Important:
The charts shown will help determine if the vehicle needs the DRL jumper kit installed. Please note the VIN ranges associated with the two charts. Some vehicles produced after VIN 4Z160000 have already had the resistance added to the turn signal circuit within the main body wiring harness. These main body wiring harnesses are identified with pink tape on the passenger side tail lamp harness in the trunk.
^ For all 2003 model year vehicles and 2004 model year vehicles built prior to VIN 4Z160000 refer to Chart A.
^ For 2004 model year vehicles built after and including VIN 4Z160000 refer to Chart B.
Important:
Perform steps 12-16 Only if required in Chart A or Chart B.
12. Locate mounting hole for resistor (3) on both the passenger and driver side. This hole is on the vertical metal between the radiator core support and the frame rail, just outboard of the radiator/condenser assembly. (Driver's side shown, passenger side in similar location.)
Notice:
Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Important:
DRL jumper kit is to be installed on both the driver and passenger side headlamp wiring.
13. Install one resistor to each mounting hole using bolt, washer, and nut provided in DRL jumper kit, P/N 15146012. The washer needs to go between the resistor and the sheet metal surface to protect the resistor.
14. Prior to installation of each nut, apply Loctite(R) Threadlocker 242, P/N 21485277 (in Canada, P/N 10953489), or equivalent (GM Material Specification 998 5283) to exposed threads and tighten bolt.
Tighten
Tighten resistor retaining bolt 10 Nm (89 in-lbs).
15. Install DRL jumper harness connector into the resistor connector and the forward lamp harness connector on each side.
16. Secure jumper harness to vehicle using clip on connector to forward lamp harness on each side.
Important:
Perform steps 17-21 on all vehicles.
17. Position each headlamp assembly in its respective vehicle opening and connect remaining headlamp wiring harness connector to connector on the headlamp assembly.
18. Install each headlamp assembly into its respective headlamp bracket and install headlamp assembly retaining pins by pushing down on the pins.
19. Clear diagnostic trouble codes (DTCs) from body control module (BCM) using Tech 2 scan tool.
20. Activate left and right turn signal to verify proper operation.
21. Close the hood.