K 1500 Truck 4WD V8-4.8L VIN V (1999)
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.
1. Apply a 5 mm (0.20 inch) bead of sealant GM P/N 12378190 or equivalent 20 mm (0.8 inch) long to the engine block.
2. Apply the sealant directly onto the tabs of the front cover gasket that protrudes into the oil pan surface.
3. Apply a 5 mm (0.20 inch) bead of sealant GM P/N 12378190 or equivalent 20 mm (0.8 inch) long to the engine block.
4. Apply the sealant directly onto the tabs of the rear cover gasket that protrudes into the oil pan surface.
IMPORTANT: Be sure to align the oil gallery passages in the oil pan and engine block properly with the oil pan gasket.
5. Pre-assemble the oil pan gasket to the pan.
