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 RepairsSIR Warning Secondary
Warning:This vehicle is equipped with a Supplemental InflatableRestraint (SIR) System. Failure to follow the correct procedurecould cause the following conditions:Air bag deploymentPersonal injuryUnnecessary SIR system repairsIn order to avoid the above conditions, observe the followingguidelines:Re ...