Hummer H3. Manual — part 537

Fig. 172: Oil Pan Surface Flatness & Front Cover-To-Engine Block
Courtesy of GENERAL MOTORS CORP.

7. Measure the oil pan surface flatness, front cover-to-engine block.

1. Place a straight edge across the engine block and front cover oil pan sealing surfaces.

Avoid contact with the portion of the gasket that protrudes into the oil pan surface.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

2. Insert a feeler gage between the front cover and the straight edge tool. The cover must

be flush with the oil pan surface or no greater than 0.5 mm (0.02 in) (a) below flush.

8. If the front cover-to-engine block oil pan surface alignment is not within specifications,

repeat the cover alignment procedure.

9. If the correct front cover-to-engine block alignment cannot be obtained, replace the front

cover.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

Fig. 173: View Of Front Cover, Oil Seal, Camshaft Position Sensor, Bracket & O
Ring
Courtesy of GENERAL MOTORS CORP.

10. Inspect the camshaft position (CMP) sensor O-ring seal (3) for cuts or damage. If the seal is

not cut or damaged, it may be used again.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

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

12. Install the O-ring seal onto the sensor (2).

13. Install the sensor to the cover.

14. Install the CMP sensor wire harness (5) and bolts (1, 6).

Tighten: Tighten the bolts to 12 N.m (106 lb in).

Fig. 174: View Of Electrical Connector, Cable Channel Bolt & Pin
Courtesy of GENERAL MOTORS CORP.

15. Connect the engine harness electrical connector (1) to the CMP sensor wire harness

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3