Chevrolet Silverado / GMC Sierra. Service manual — part 300

3. Using the bolts as a handle, carefully install the camshaft into the engine block.

4. Remove the three bolts from the front of the camshaft.

Fig. 228: View Of Camshaft Retainer Plate
Courtesy of GENERAL MOTORS CORP.

NOTE:

All camshaft journals are the same diameter, so care must be
used in removing or installing the camshaft to avoid damage to
the camshaft bearings.

IMPORTANT: Install the retainer plate with the sealing gasket facing the

engine block.
The gasket surface on the engine block should be clean and

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

5. Install the camshaft retainer and bolts.

Tighten: Tighten the camshaft retainer bolts to 25 N.m (18 lb ft).

Fig. 229: View Of Camshaft Position (CMP) Sensor & Bolt
Courtesy of GENERAL MOTORS CORP.

free of dirt and/or debris.

NOTE:

Refer to Fastener Notice .

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

6. Inspect the camshaft sensor O-ring seal. If the O-ring seal is not cut or damaged, it may be

reused.

7. Lubricate the O-ring seal with clean engine oil.

8. Install the camshaft sensor and bolt.

Tighten: Tighten the camshaft sensor bolt to 25 N.m (18 lb ft).

9. Install the camshaft sprocket and timing chain. Refer to Timing Chain and Sprocket

Replacement.

10. Install the engine front cover. Refer to Engine Front Cover Removal.

11. Install the valve lifters. Refer to Valve Lifter Replacement.

12. Install the radiator support. Refer to Radiator Support Replacement .

13. Install the hood. Refer to Hood Replacement .

14. Lower the hood to the normal position.

AUTOMATIC TRANSMISSION FLEX PLATE REPLACEMENT

Removal Procedure

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 230: View Of Engine Flywheel & Bolt
Courtesy of GENERAL MOTORS CORP.

1. Remove the automatic transmission. Refer to Transmission Replacement .

2. Remove the engine flywheel bolts.

3. Remove the automatic transmission engine flywheel.

IMPORTANT: Note the position and direction of the engine flywheel before

removal.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2