2008 Buick Enclave Oil Pan

You need to install the 8 mm (0.315 in) guides from the EN 46109 into the center oil pan rail bolt hole on each side of the engine block, place a 3 mm (0.118 in) bead of RTV sealant, GM P/N 12378521 (Canadian P/N 88901148) or equivalent, on the block pan rail and the crankshaft rear oil seal housing, position the oil pan onto the block, remove the EN 46109 8 mm (0.315 in) guides from the engine block, install the oil pan bolts, tighten the oil pan bolts in the sequence shown, install the air conditioning (A/C) compressor and the exhaust flexible pipe, lower the vehicle, refill the engine oil, and then connect the battery negative cable.

You need to disconnect the battery negative cable, raise and support the vehicle, drain the engine oil and remove the oil filter, remove the exhaust flexible pipe, the air conditioning (A/C) compressor, the oil pan bolts, and the oil pan, and then clean the oil pan and the engine block gasket surface.