Pontiac 2002 Grand Prix Owner's Manual page 158

To adjust the HUD so you can see it properly do
the following:
1. Adjust your seat, if necessary, to a
comfortable position.
2. Start the engine and adjust the HUD controls located
on the instrument panel, to the right of the steering
wheel. Move the DIM thumbwheel up or down to
adjust brightness.
2-98
3. Press the top of the UP/DN switch until the HUD
image stops moving. Then press the bottom of the
switch until the image is as low as possible but in
full view.
4. Move the DIM thumbwheel down until the HUD
image is no brighter than necessary. To turn the HUD
off, move the DIM thumbwheel all the way down.
If the sun comes out, it becomes cloudy, or if you turn
on your headlamps, you may need to adjust the HUD
brightness again. Polarized sunglasses could make the
HUD image harder to see.
If your vehicle is not equipped with the trip calculator,
you cannot change the display.
Push the ENG/MET button
on the trip calculator,
located above the audio
controls on the trip
computer (if equipped) on
the instrument panel, to
switch the HUD display
from English to metric or
metric to English.