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 RepairsPower Steering System Bleeding Hydraulic Steering
Note:Use clean, new power steering fluid only. Refer toAdhesives, Fluids, Lubricants, and Sealers.Hoses touching the frame, body or engine may cause systemnoise. Ensure the hoses do not touch any other part of thevehicle.Loose connections may not leak, but could allow air into thesteering system. En ...