See also:

Extending Engine Run Time
For a 10-minute extension, repeat Steps 1 and 2 while the engine is still running. The remote start can be extended once. When the remote start is extended, the second 10 minutes will start immedia ...

Reporting Safety Defects to General Motors
In addition to notifying NHTSA (or Transport Canada) in a situation like this, please notify General Motors. Call 1-800-GMC-8782 (1-800-462-8782), or write: GMC Customer Assistance Center P.O. Box ...

Starting the Engine
If the vehicle has a diesel engine, see the Duramax diesel supplement for more information. If the vehicle is a hybrid, see the hybrid supplement for more information. Notice: Do not try to shift to ...