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:
Immobilizer Operation
This vehicle has PASS-Key® III+ (Personalized Automotive Security System) theft-deterrent system.
PASS-Key III+ is a passive theft-deterrent system.
The system is automatically armed when the key i ...
Filling the Tank
If the vehicle has a diesel engine, see the Duramax diesel supplement for more information.
WARNING
Fuel vapor burns violently and a fuel fire can cause bad injuries.
To help avoid injuries to you ...
Unable to Connect to OnStar Message
If there is limited cellular coverage or the cellular network has reached maximum
capacity, this message may come on. Push Q to try the call again or try again after
driving a few miles into anoth ...





