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:

z

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

z

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