Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Important: The original oil pan gasket is retained and aligned to the oil pan by rivets. When installing a new gasket, it is not necessary to install new rivets.
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.
Important: Be sure to align the oil gallery passages in the oil pan and engine block properly with the oil pan gasket.
Tighten Tighten the nut to 10 N·m (89 lb ft).
Tighten Tighten the bolts to 55 N·m (41 lb ft).
Tighten Tighten the bolts to 100 N·m (75 lb ft).
Tighten Tighten the nuts to 100 N·m (75 lb ft).
I just recently purchased a 2004 Tahoe with 155000 miles