Sierra Classic 2500 4WD V8-6.0L (2007)
23. Remove the oil pan bolts.
24. Remove the oil pan.
25. Important: DO NOT allow foreign material to enter the oil passages of the oil pan, cap or cover the openings as required.
Drill (3) out the oil pan gasket retaining rivets (2), if required.
26. Remove the gasket (1) from the pan.
27. Discard the gasket and rivets.
28. If required, clean and inspect the engine oil pan. Refer to Oil Pan Cleaning and Inspection.
Installation Procedure
Important:
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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.
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Do not reuse the oil pan gasket.
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It is not necessary to rivet the NEW gasket to the oil pan.
1. Apply a 5 mm (0.2 inch) bead of sealant 20 mm (0.8 inch) long to the engine block. Apply the sealant directly onto the tabs of the front cover
gasket that protrudes into the oil pan surface. Refer to Sealers, Adhesives, and Lubricants.
