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 RepairsInstrument Cluster Description and Operation Gauges
Displays TestCertain instrument cluster features are tested when theignition is turned on in order to verify the features are workingproperly. The following occurs when the ignition is turnedon:The ABS indicator illuminates briefly.The active front steering failure indicator illuminatesbriefly.The b ...