2009 GMC Envoy Owner's Manual - Page 117

To adjust for compass variance: 1. Find your current location and variance zone number on the following zone map. 3. Keep pressing O until the desired zone number displays. Release the button. After several seconds of inactivity, the new zone number locks in and the compass display returns. 4. Calibrate the compass as previously described. Outside Manual Mirrors Adjust the outside rearview mirrors to see a little of the side of your vehicle, and the area beside your vehicle. Manually fold the mirrors inward to prevent damage when going through an automatic car wash. To fold, push the mirror toward the vehicle. Push the mirror outward, to return to its original position. 2. Press and hold O or depending on the mirror, press COMP until a Z and/or a zone number displays. The compass is now in zone mode. 2-41