Safety Chains
Always attach chains between the vehicle and the trailer. Cross the safety chains under the tongue of the trailer to help prevent the tongue from contacting the road if it becomes separated from the hitch.
Always leave just enough slack so the rig can turn. Never allow safety chains to drag on the ground.
See also:
Starting the Vehicle
1. Press and release on the Remote
Keyless Entry transmitter.
2. Press and hold for about two
seconds. The turn signal lamps will briefly flash to confirm the vehicle has been
started. The pa ...
Customer Assistance Offices (U.S. and Canada)
GMC encourages customers to call the toll-free number for assistance.
However, if a customer wishes to write or e-mail GMC, the letter should be addressed to:
United States
GMC Customer Assistance ...
Vehicle Speed Messages
SPEED LIMITED TO XXX MPH (KM/H)
This message displays when your vehicle speed is limited to 128 km/h (80 mph) because the vehicle detects a problem in the speed variable assist steering system.
Have ...