Fuel
For diesel engine vehicles, see “Fuel for Diesel Engines” in the Duramax Diesel Supplement.
For Vehicles with gasoline engines, please read this.
See also:
Exterior Lighting
The exterior lamp control is located on the turn signal/lane change lever.
: Turn to operate the exterior lamps.
: Turns the exterior lamps off.
AUTO: Turns the exterior lamps on and off automat ...
Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the vehic ...
Call Waiting
Call waiting must be supported on the cell phone and enabled by the wireless
service carrier.
○ Press to answer an incoming call
when another call is active. The original call is placed on ...