Hummer H3. Manual — part 505

Fig. 56: Engine Harness Electrical Connector & Ignition Coil Harness Electrical
Connector
Courtesy of GENERAL MOTORS CORP.

10. Disconnect the engine harness electrical connector (1) from the ignition coil harness

electrical connector.

11. Disconnect the engine harness electrical connector (2) from the throttle actuator.

12. Remove the engine harness clip (3) from the ignition coil bracket stud.

13. Disconnect the engine harness electrical connectors (4) from the right side fuel injectors.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

Fig. 57: Engine Harness Clips
Courtesy of GENERAL MOTORS CORP.

14. Remove the engine harness clips (1).

15. Disconnect the engine harness electrical connector (2) from the engine coolant temperature

(ECT) sensor.

16. Gather the engine harness branches and tie the harness up out of the way to the front of the

engine compartment.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

Fig. 58: Engine Oil Pressure Sensor Electrical Connector
Courtesy of GENERAL MOTORS CORP.

17. Disconnect the engine oil pressure sensor electrical connector (1).

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

Fig. 59: Brake Booster Vacuum Hose
Courtesy of GENERAL MOTORS CORP.

18. Reposition the brake booster vacuum hose clamp at the booster.

19. Remove the brake booster vacuum hose from the booster fitting.

20. Secure the brake booster vacuum hose to the intake manifold.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3