Emergency
With Automatic Crash Response, the built-in system can automatically connect to help in a crash even if you cannot ask for it.
Push 
to connect to an Emergency Advisor.
GPS technology is used to identify the vehicle location and can provide critical
information to emergency personnel. The Advisor is also trained to offer critical
assistance in emergency situations.
See also:
Fifth-Wheel and Gooseneck Trailering
Fifth-wheel and gooseneck trailers can be used with many pickup models. These trailers place a larger percentage of the weight (kingpin weight) on the tow vehicle than conventional trailers. Make sure ...
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 ...
Passenger Airbag Status Indicator
The vehicle has a passenger sensing system. See Passenger Sensing System on page 3‑31 for important safety information.
The instrument panel has a passenger airbag status indicator.
United S ...