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 RepairsTire Inflation Description Wheels
When you inflate the tires to the recommended inflationpressures, the factory-installed wheels and tires are designed inorder to handle loads to the tire's rated load capacity. Incorrecttire pressures, or under-inflated tires, can cause the followingconditions:Vehicle handling concernsPoor fuel econ ...