Chevrolet Silverado / GMC Sierra. Service manual — part 289

Fig. 187: View Of Oil Pan & Bolts
Courtesy of GENERAL MOTORS CORP.

16. Remove the oil pan bolts.

17. Remove the oil pan.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 188: Drilling Oil Pan Gasket Retaining Rivets
Courtesy of GENERAL MOTORS CORP.

18. Drill (3) out the oil pan gasket retaining rivets (2), if required.

19. Remove the gasket (1) from the pan.

20. Discard the gasket and rivets.

21. Clean and inspect the engine oil pan. Refer to Oil Pan Cleaning and Inspection.

IMPORTANT: DO NOT allow foreign material to enter the oil passages of

the oil pan, cap or cover the openings as required.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Installation Procedure

IMPORTANT:

The alignment of the structural oil pan is critical. The rear
bolt hole locations of the oil pan provide mounting points for
the transmission bellhousing. To ensure the rigidity of the
powertrain and correct transmission alignment, it is
important that the rear of the block and the rear of the oil pan
must NEVER protrude beyond the engine block and
transmission bellhousing plane.

Do not reuse the oil pan gasket.

It is not necessary to rivet the NEW gasket to the oil pan.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 189: View Of Sealant Applied To Front Oil Pan-To-Engine Block Junction
Courtesy of GENERAL MOTORS CORP.

1. Apply a 5 mm (0.20 in) bead of sealant 20 mm (0.80 in) long to the engine block. Refer to

Sealers, Adhesives, and Lubricants for the correct part number.

Apply the sealant directly onto the tabs of the front cover gasket that protrudes into the oil
pan surface.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2