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 RepairsCooling System Draining and Filling (GE 47716) Engine Cooling
Special ToolsJ 26568Coolant and Battery Fluid TesterJ 42401Radiator Cap and Surge Tank Test AdapterGE-47716Vac N Fill Coolant Refill ToolDraining ProcedureWarning:With a pressurized cooling system, the coolant temperature inthe radiator can be considerably higher than the boiling point ofthe solutio ...