Hummer H2. Manual — part 1772

Fig. 277: Engine Block Coolant Heater
Courtesy of GENERAL MOTORS CORP.

5. Remove the engine block coolant heater, if applicable, and allow the coolant to drain.

2004 Hummer H2

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

Fig. 278: Oil Pressure Sensor & J 41712
Courtesy of GENERAL MOTORS CORP.

6. Use the J 41712 or equivalent in order to remove the oil pressure sensor, if required.

CRANKSHAFT BALANCER REMOVAL

Tools Required

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J 41816 Crankshaft Balancer Remover

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J 41816-2 Crankshaft End Protector

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J 42386-A Flywheel Holding Tool

2004 Hummer H2

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

Fig. 279: View Of J 42386-A & Bolts
Courtesy of GENERAL MOTORS CORP.

1. Install the J 42386-A and bolts.

NOTE:

Refer to Fastener Notice in Cautions and Notices.

IMPORTANT:

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Do not use the crankshaft balancer bolt again. Install a NEW
crankshaft balancer bolt during final assembly.

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Ensure the teeth of the flywheel holding tool mesh with the teeth of
the engine flywheel.

2004 Hummer H2

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

Use one M10 - 1.5 x 120 mm and one M10 - 1.5 x 45 mm bolt for proper tool operation.

Tighten: Tighten the J 42386-A bolts to 50 N.m (37 lb ft).

Fig. 280: View Of Crankshaft Balancer
Courtesy of GENERAL MOTORS CORP.

2. Remove the crankshaft balancer bolt.

Do not discard the crankshaft balancer bolt. The balancer bolt will be used during the balancer installation
procedure.

2004 Hummer H2

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