Hummer H2. Manual — part 1728

block.

6. Lower the vehicle.

7. Install the oil level indicator tube bolt

Tighten: Tighten the oil level indicator tube bolt to 25 N.m (18 lb ft).

Fig. 113: Oil Level Indicator
Courtesy of GENERAL MOTORS CORP.

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

8. Install the oil level indicator to the tube.

CYLINDER HEAD REPLACEMENT - LEFT

Tools Required

z

J 42385-200 Thread Repair Kit. See Special Tools and Equipment .

z

J 45059 Angle Meter. See Special Tools and Equipment .

Removal Procedure

1. Remove the generator bracket. Refer to Generator Replacement .

2. Remove the coolant air bleed pipe. Refer to Coolant Air Bleed Pipe Assembly Replacement .

3. Remove the left exhaust manifold. Refer to Exhaust Manifold Replacement - Left .

4. Remove the pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .

2004 Hummer H2

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

Fig. 114: Cylinder Head & Bolts (Left)
Courtesy of GENERAL MOTORS CORP.

5. Remove the cylinder head bolts.

or

6. Remove the cylinder head.

IMPORTANT: The cylinder head bolts are NOT reusable.

NOTE:

After removal, place the cylinder head on two wood blocks to prevent
damage to the sealing surfaces.

2004 Hummer H2

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

Fig. 115: Cylinder Head Gasket (Left)
Courtesy of GENERAL MOTORS CORP.

7. Remove the cylinder head gasket.

8. Discard the gasket.

9. Discard the cylinder head bolts.

10. Clean and inspect the cylinder head. Refer to Cylinder Head Cleaning and Inspection .

Installation Procedure

2004 Hummer H2

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