Languages
The vehicle can be programmed to respond in French or Spanish. Push 
and ask an Advisor. Advisors can speak French or Spanish.
See also:
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
Maintenance Replacement Parts
Replacement parts identified below by name, part number, or specification can
be obtained from your dealer.
...
Universal Remote System Operation
Press and hold the appropriate button for at least half of a second.
The indicator light will come on while the signal is being transmitted. ...
Customer Satisfaction Procedure (U.S. and
Canada)
Your satisfaction and goodwill are important to your dealer and to GMC. Normally, any concerns with the sales transaction or the operation of the vehicle will be resolved by your dealer's sales or ser ...