Severe Commercial Use Vehicles Only: Lubricate chassis components every 5 000 km/3,000mi.Have underbody flushing service performed. See "Underbody Maintenance" inExterior Care.
Power Mode Description and Operation
GMLAN and Media Oriented Systems Transport (MOST) Wiring RepairsEngine Component Description (LAF, LEA, or LUK)
Engine DescriptionCylinder BlockThe cylinder block is constructed of aluminum alloy byprecision sand-casting with 4 cast-in-place iron cylinder linersarranged in-line. The block has 5-crankshaft bearingswith the thrust bearing located on the second bearing from thefront of the engine. The cylinder b ...