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 RepairsRear Output Drive Housing Cleaning and Inspection Automatic Transmission Unit
Rear Output Drive Housing Cleaning and InspectionCalloutComponent NamePreliminary ProceduresClean all components in cleaning solvent and air dry.The transfer case internal components are not to be serviced. If internal componentsother than seals are damaged, the transfer case must be replaced.1Trans ...