Hummer H2. Manual — part 1758

Fig. 224: Coolant Temperature Sensor & Electronic Variable Orifice Switch Electrical Connectors
Courtesy of GENERAL MOTORS CORP.

20. Remove the harness ground bolt.

21. Reposition the harness ground and negative battery cable from the block.

22. Disconnect the following electrical connectors:

z

Coolant temperature sensor (1)

z

Electronic variable orifice switch (2)

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

Fig. 225: Oil Pressure Sensor Electrical Connector
Courtesy of GENERAL MOTORS CORP.

23. Remove the harness ground bolt at the right rear of the engine block.

24. Reposition the harness ground from the block.

25. Remove the harness ground bolt at the left rear of the engine block

26. Reposition the harness ground, and engine ground strap from the block.

27. Disconnect the following electrical connectors:

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

z

Oil pressure sensor (1)

z

Camshaft position (CMP) sensor (2)

28. Unclip all of the engine harness clips from the engine.

Fig. 226: Battery Cable Junction Block & Junction Block Bracket
Courtesy of GENERAL MOTORS CORP.

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

29. Remove the battery cable junction block from the junction block bracket.

Fig. 227: Top View Of Engine
Courtesy of GENERAL MOTORS CORP.

30. Remove the EVAP purge solenoid vent tube, perform the following:

z

Remove the EVAP tube end (2) from the solenoid (1).

z

Remove the EVAP tube end (3) from the vapor pipe.

31. Disconnect the fuel pipes. Refer to Quick Connect Fitting(s) Service (Metal Collar) or Quick Connect

Fitting(s) Service (Plastic Collar) in Engine Controls - 6.0L.

32. Raise the vehicle.

2004 Hummer H2

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2