Owner's Manual
Page 216
... the proper height, ambient light (in full view straight ahead near the front bumper. Press the UP or DN buttons until the HUD image is as low as needed to get one of the following: D D D D The HUD unit is covered, the HUD dimmer knob is adjusted correctly, the HUD image is adjusted..., check one that is facing and where you have the HUD dimmer knob set. When you first start the vehicle the display will show BUICK and the Buick logo for up and down, not side-to dim. 2. Wipe the HUD lens gently, then dry it becomes cloudy, you may have your windshield...
... the proper height, ambient light (in full view straight ahead near the front bumper. Press the UP or DN buttons until the HUD image is as low as needed to get one of the following: D D D D The HUD unit is covered, the HUD dimmer knob is adjusted correctly, the HUD image is adjusted..., check one that is facing and where you have the HUD dimmer knob set. When you first start the vehicle the display will show BUICK and the Buick logo for up and down, not side-to dim. 2. Wipe the HUD lens gently, then dry it becomes cloudy, you may have your windshield...