Hummer H2. Manual — part 1793

Fig. 359: Crankshaft Bearings & Bearing Caps
Courtesy of GENERAL MOTORS CORP.

10. Remove the crankshaft bearings from the bearing caps and the engine block.

11. Mark, sort, or organize the crankshaft bearings so they may be installed to their original position and

location. Refer to Separating Parts .

ENGINE BLOCK PLUG REMOVAL

2004 Hummer H2

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

Tools Required

J 41712 Oil Pressure Switch Socket

Fig. 360: Oil Pressure Sensor & J 41712
Courtesy of GENERAL MOTORS CORP.

IMPORTANT:

z

Do not remove the engine block front oil gallery plug unless service
is required.

z

If the front oil gallery plug is removed for service, a NEW oil gallery
plug must be installed.

2004 Hummer H2

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

1. Remove the oil pressure sensor, if not previously removed, using the J 41712 or equivalent.

Fig. 361: Identifying Plug Location On Underside Of Block
Courtesy of GENERAL MOTORS CORP.

2. Remove the engine block right rear coolant drain hole plug.

2004 Hummer H2

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

Fig. 362: Engine Block Coolant Heater
Courtesy of GENERAL MOTORS CORP.

3. Remove the engine block coolant heater, if applicable.

2004 Hummer H2

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