Removal Procedure

REMOVAL PROCEDURE

The underhood electrical center is part of the forward lamp wiring harness. The underhood electrical center and harness must be replaced as a complete assembly.

CAUTION: Refer to Battery Disconnect Caution In Service Precautions.

1. Disconnect the negative battery cable.






2. Starting inside the vehicle, disconnect the accel/cruise servo cable adjuster electrical connectors (1).






3. Disconnect the following connectors from the steering column (1):
^ Ignition switch (2)
^ Wiper/washer (3)
Cut the insulator from around the connector.
^ Dimmer switch (4)






4. Disconnect the Electronic Throttle Control (ETC) electrical connector (1), if equipped with a 3.8 L engine.
5. Disconnect the rosebud clips (2) from the dash mat.
6. Raise and suitably support the vehicle.






7. Disconnect the Secondary Air Injection (AIR) pump connector, if equipped with a 5.7 L engine.






8. Disconnect the vacuum tank hose from the vacuum tank.






9. Remove the park/turn signal (3) and marker lamp (1) connector from the lamp (2).
10. On Pontiac, disconnect the side marker lamp connector.






11. Remove the side repeater lamp (Export only).






12. Remove the harness clips (1) from the fender rail. (Export only)






13. On Chevrolet, disconnect the connector from the fog lamp.
14. Remove the rosebud clip from the front bumper beam.






15. On Pontiac, disconnect the connector from the fog lamp.
16. Remove the clip from the front bumper beam.






17. Remove the secondary lock retainer (3).
18. Disconnect the headlamp jumper harness (2) from the forward lamp harness (1).






19. Disconnect the inline headlamp connector (1) from the forward lamp harness.
20. Disconnect the rosebud clip (5) from the front end panel.
21. Route the following through the front end panel hole.
^ Fog lamp connector (2)
^ Park/turn signal connector (3)
^ Side marker connector (4), Pontiac only
22. Lower the vehicle.






23. Remove the captured secondary lock (1) from the connector.
24. Disconnect the ETC connector (2) from the throttle body, if equipped with a 3.8 L engine.






25. Disconnect the washer pump electrical connector (1).
26. Disconnect the windshield washer fluid hose (2) from the pump.






27. Disconnect the forward lamp wiring harness rosebud clips (1) from the tie bar.






28. Disconnect the cooling fan electrical connectors.
29. Disconnect the harness rosebud clips.
30. Remove the battery.






31. Remove the right front ground bolt (2).
32. Remove the forward lamp wiring ground (3) from the tie bar.
33. Remove the harness from the outboard of the battery tray (1).
34. Remove the forward lamp harness headlamp branch through the hole in the front panel.






35. Remove the forward lamp harness ground stud (1).
36. Remove the forward lamp harness ground (2).
37. Disconnect the electronic throttle actuator electrical connector (3), if equipped with a 5.7 L engine.






38. Disconnect the secondary captured locks.
39. Disconnect the forward lamp harness from the engine harness.
40. Disconnect the forward lamp harness vacuum tube from the top of the vacuum check valve.






41. Remove the speed sensor connector (1) from the mid rail.
42. Disconnect the harness rosebud (2) clip at the coolant fill neck.






43. Remove the positive battery cable from the stud on the fuseblock:
43.1. Open the positive cable cap.
43.2. Remove the positive cable to fuseblock stud nut
43.3. Remove the positive cable from the fuseblock stud.






44. Remove the ABS/SIR electrical ground stud (1) from the wheelhouse panel.
45. Remove the ABS/SIR electrical ground terminal (2) from the wheelhouse.






46. Disconnect the 30 way connector (1) from the brake pressure module valve.






47. Disconnect the brake fluid level sensor connector (1) from the master cylinder.
48. Remove the wheel speed sensor connector (2) from the mid rail.






49. Remove the underhood electrical center from the wheelhouse bracket.
50. Remove the air inlet grille panel.
51. Disconnect the wiper motor electrical connector.






52. Remove the wipe motor harness branch from the plenum extension.
53. Remove the windshield washer fluid hose from the plenum extension.
54. Remove the forward lamp wiring harness grommet bolt (2).
55. Remove the harness rosebud clip at the left wheelhouse panel.
56. Gently, remove the forward lamp harness from inside the vehicle through the front of dash opening.
57. Remove the forward lamp wiring harness from the vehicle.