Hummer H2. Manual - part 1853

Tighten: Tighten the oil filter to 30 N.m (22 lb ft).

3. Locate the engine block left front oil gallery plug (116).

4. Install the M16 x 1.5 adapter P/N 509375.

Fig. 577: Identifying J 45299

2004 Hummer H2

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

Courtesy of GENERAL MOTORS CORP.

5. Install the flexible hose to the adapter and open the valve.

6. Pump the handle on the J 45299 in order to flow a minimum of 1-1.9 liters (1-2 quarts) engine oil.

Observe the flow of engine oil through the flexible hose and into the engine assembly. See Special Tools
and Equipment .

7. Close the valve and remove the flexible hose and adapter from the engine.

8. Install the gallery plug to the engine.

Tighten: Tighten the oil gallery plug to 60 N.m (44 lb ft).

9. Top-off the engine oil to the proper level.

ENGINE BLOCK PLUG INSTALLATION

Tools Required

J 41712 Oil Pressure Switch Socket or equivalent

2004 Hummer H2

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

Fig. 578: Engine Block Coolant Heater
Courtesy of GENERAL MOTORS CORP.

1. Apply a 3.175 mm (0.125 in) bead of sealant GM P/N 12346004 (Canadian P/N 10953480) to the engine

block coolant heater sealing washer, if applicable. Refer to Sealers, Adhesives, and Lubricants .

2. Install the engine block coolant heater to the engine block, if applicable.

IMPORTANT:

Engine block plug, oil gallery and coolant, sealing washers may be
used again if not bent, scored or otherwise damaged.

Apply the proper amount and type of sealant to the sealing washer
as recommended in the service procedure.

NOTE:

Refer to Fastener Notice in Cautions and Notices.

2004 Hummer H2

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

Tighten: Tighten the block coolant heater to 40 N.m (30 lb ft).

Fig. 579: Engine Block Left Rear Coolant Drain Hole Plug
Courtesy of GENERAL MOTORS CORP.

3. Apply a 3.175 mm (0.125 in) bead of sealant GM P/N 12346004 (Canadian P/N 10953480) to the engine

block left front coolant drain hole plug sealing washer, if applicable.

4. Install the engine block left front coolant drain hole plug, if applicable.

Tighten: Tighten the block left front coolant drain hole plug to 60 N.m (44 lb ft).

2004 Hummer H2

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