2008 GMC Acadia Owner's Manual - Page 164

The HUD control is located to the right of the steering wheel. w (Up): x(Down): Press the up or down arrows to center the HUD image in your view. The HUD image can only be adjusted up and down, not side to side. ? (Page): Press this button to select the display formats. Release the page button when the format number with the desired display is shown on the HUD. The three formats are as follows: To adjust the HUD image so that items are properly displayed, do the following: 1. Adjust the driver's seat to a comfortable position. 2. Start the engine. 3. Adjust the HUD controls. Use the following settings to adjust the HUD. Format One: This display gives the speedometer reading (in English or metric units), turn signal indication, high beam indication, transmission positions, and the outside air temperature. 9(Off): To turn HUD off, rotate the dimming knob fully counterclockwise until the HUD display turns off. Brightness: Turn the knob on the HUD control clockwise to brighten the display and counterclockwise to dim it. 3-22