GMC 2010 Yukon/Yukon XL Owner's Manual page 20

Vehicles with manual outside mirrors can be adjusted
so that the side of the vehicle and the area behind
are seen.
If the vehicle has towing mirrors, they can be adjusted
for a clearer view of the objects behind you. Manually
pull out the mirror head to extend it for better visibility
when towing a trailer. See Outside Towing Mirrors on
page 3 55.
1-14
1. Press (A) or (B) to select the driver or passenger
side mirror.
2. Press one of the four arrows located on the control
pad to adjust the mirror.
3. Press either (A) or (B) again to deselect the mirror.
To fold the mirrors:
1. Press (C) to fold the mirrors out to the driving
position.
2. Press (D) to fold the mirrors in to the folded
position.
Vehicles with outside
power mirrors and
foldaway mirrors have
controls located on the
driver door.