K 1500 Suburban 4WD V8-5.3L VIN Z Flex Fuel (2003)
1. Apply a 5 mm (0.20 inch) bead of sealant GM P/N 12378190, or equivalent 20 mm (0.80 inch) long to the oil pan to engine block junction.
2. Install the rear cover gasket and cover.
3. Install the rear cover bolts until snug. Do not overtighten.
4. Install the oil pan-to-rear cover bolts (1) until snug. Do not overtighten.
