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 RepairsFuel Pressure Gauge Installation and Removal Engine Control
Special Tools CH 48027 Digital Pressure GaugeFor equivalent regional tools, refer toSpecial ToolsInstallation ProcedureWarning:Refer toGasoline/Gasoline Vapors Warning.Warning:Remove the fuel tank cap and relieve the fuel system pressurebefore servicing the fuel system in order to reduce the risk of ...