Engine Oil Additives/Engine Oil Flushes
Do not add anything to the oil. The recommended oils with the dexos specification and displaying the dexos certification mark are all that is needed for good performance and engine protection.
Engine oil system flushes are not recommended and could cause engine damage not covered by the vehicle warranty.
See also:
Roadside Assistance Program
U.S.: 1-888-881-3302
TTY Users (U.S.): 1-888-889-2438
Canada: 1-800-268-6800
Mexico: 01-800-466-0801
As the owner of a new GMC, you are automatically enrolled in the Roadside Assistance program.
...
Passenger Airbag Status Indicator
The vehicle has a passenger sensing system. See Passenger Sensing System on page
3‑28 for important safety information. The overhead console has a passenger airbag
status indicator.
Unite ...
Instrument Panel Illumination Control
The instrument panel brightness knob is located on the instrument panel to the left of the steering column.
(Instrument Panel Brightness): Push the knob in all the way until it extends out and the ...