Basic Trailer Wiring
All regular, extended cab and crew cab pickups have a seven-wire trailer towing harness.
For vehicles not equipped with heavy duty trailering, the harness is secured to the vehicle's frame behind the spare tire mount. The harness requires the installation of a trailer connector, which is available through your dealer.
If towing a light-duty trailer with a standard four-way round pin connector, an adapter is available from your dealer.
See also:
Exterior
There's hybrid badging on the cab's rear window, ahead of the side mirrors
and on the tailgate, but otherwise the hybrid version looks similar to the
gas-powered version. ...
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.
...
StabiliTrak® OFF Light
This light comes on briefly while starting the engine.
If it does not, have the vehicle serviced by your dealer. If the system is working normally, the indicator light then goes off.
Press and rel ...