Erasing Speed Memory
The cruise control set speed is erased from memory by pressing 
or if the ignition is turned off.
See also:
USB Supported File and Folder Structure
The radio supports:
• Up to 700 folders.
• Up to eight folders in depth.
• Up to 65,535 files.
• Folder and file names up to 64 bytes.
• Files with an .mp3 or .wma file extension.
• ...
Roadside Assistance Program
U.S.: 1-888-881-3302
TTY Users (U.S.): 1-888-889-2438
Canada: 1-800-268-6800
Mexico: 01-800-466-0801
As the owner of a new GMC, you are automatically enrolled in the Roadside Assistance program.
...
Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn the ignition to LOCK/OFF
in each shift lever position.
○ The ignition should turn to LOCK/OFF only when the shift lever is in P (Park ...