2002 Pontiac Grand Prix Owner's Manual - Page 122

To adjust for compass variance, do the following: 1. Find your current location and variance zone number on the map. 3. Scroll through the zone numbers that appear in the compass/temperature window on the mirror by pressing the COMP button or the on/off button. Once you find your zone number, release the button. After about four seconds, the mirror will return to the compass and temperature display, and the new zone number will be set. Electrochromic Day/Night Rearview Mirror with Compass, Temperature Display, and OnStarR (Option) Your vehicle may have an automatic-dimming rearview mirror with a compass and temperature display and the OnStar system. When turned on, this mirror functions exactly like the electrochromic mirror described previously. See "Mirrors, Electrochromic Rearview" in the Index for more information. The mirror also has an eight-point compass and temperature display in the upper right corner on the mirror face and a three-button OnStar system. : The button with this symbol is the on/off button for the mirror functions such as automatic dimming and temperature display. It is the far left button located on the lower part of the mirror face. 2. Press and hold the COMP button for three seconds. If your vehicle has the optional mirror with the compass, temperature display and OnStar system, press the on/off button for six seconds. Release the button when "ZONE" is displayed. The number shown is the current zone number. 2-62