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 RepairsDriving for Better Fuel Economy
Driving habits can affect fuel mileage. Here are some driving tips to get the bestfuel economy possible.Avoid fast starts and accelerate smoothly.Brake gradually and avoid abrupt stops.Avoid idling the engine for long periods of time.When road and weather conditions are appropriate, use cruise contr ...