Consists of engine block, crankshaft, connecting rods, pistons, piston rings, cylinder head assembly (including valve train components), lifters, camshaft, balance shaft (if equipped), timing gears and chain, timing chain dampener, and oil pump, unless otherwise specified.
RPO - LU3
2007 - 2011 Chevrolet Pickup (CK1)
2007 - 2011 GMC Pickup (CK1)
2007 - 2011 GMC Suburban (CK1)
2007 - 2011 Chevrolet Tahoe (CK1)
2008 - 2011 Chevrolet Express (G1)
2008 - 2011 GMC Savana (G1)