Compass Variance (Zone) Procedure
1. Do not set the compass zone when the vehicle is moving. Only set it when the vehicle is in P (Park).
Press the vehicle information button until PRESS 
TO CHANGE COMPASS ZONE displays. Or, if the vehicle does not have DIC buttons, press the trip odometer reset stem until CHANGE COMPASS ZONE displays.
2. Find the vehicle's current location and variance zone number on the map.
Zones 1 through 15 are available.
3. Press the set/reset button to scroll through and select the appropriate variance zone.
4. Press the trip/fuel button until the vehicle heading, for example, N for North, is displayed in the DIC. Or, if the vehicle does not have DIC buttons, press and hold the trip odometer reset stem for two seconds to select the next available variance zone. Repeat this step until the appropriate variance zone is displayed.
5. If calibration is necessary, calibrate the compass. See “Compass Calibration Procedure” following.
See also:
Trailer Towing
Three important considerations have to do with weight:
• The weight of the trailer
• The weight of the trailer tongue
• The total weight on the vehicle's tires ...
Making a Call
To make a call:
1. Press 5 once or twice (depending on the radio).
2. Enter the phone number.
3. Select Call to start dialing the number. ...
Fluids
Proper fluid levels and approved fluids protect the vehicle’s systems and components.
See Recommended Fluids and Lubricants on page 11‑12 for GM approved fluids.
• Engine oil and windshiel ...