Compass and Clock
Compass
The vehicle may have a compass. The compass information is displayed on the Driver Information Center (DIC). The compass receives its heading and other information from the Global Positioning System (GPS) antenna, the StabiliTrak/Electronic Stability Control (ESC) system, and the vehicle speed information.
The compass system is designed to operate for a certain number of miles or degrees of turn before it needs a signal from GPS satellites. When the compass display shows CAL, drive the vehicle a short distance in an open area where it can receive a GPS signal. The compass system automatically detects when the GPS signal is restored and provides the heading again.
Clock
Set the time and date using the infotainment system. See "Time/Date" under "Settings" in the infotainment manual.
Test yourself
A quick GMC Terrain quiz: every answer comes with an explanation and a link to the manual page.