Mirrors; Manual Rearview Mirror; Automatic Dimming Rearview Mirror - GMC 2009 Yukon XL Owner's Manual

CAUTION:
{
It can be dangerous to get out of the vehicle if the
automatic transmission shift lever is not fully in
P (Park) with the parking brake firmly set. The
vehicle can roll. Do not leave the vehicle when the
engine is running unless you have to. If you have
left the engine running, the vehicle can move
suddenly. You or others could be injured. To be
sure the vehicle will not move, even when you are
on fairly level ground, always set the parking
brake and move the shift lever to P (Park).
CAUTION:
{
Four-wheel drive vehicles with the transfer
case in N (Neutral) will allow the vehicle to roll,
even if the automatic transmission shift lever is in
P (Park). So, be sure the transfer case is in a
drive gear — not in N (Neutral). Always set the
parking brake.
2-48
Follow the proper steps to be sure the vehicle will not
move. See Shifting Into Park on page 2-44.
If pulling a trailer, see Towing a Trailer on page 4-52.

Mirrors

Manual Rearview Mirror

Hold the inside rearview mirror in the center to move it
for a clearer view behind your vehicle. Adjust the
mirror to avoid glare from the headlamps behind you.
Push the tab forward for daytime use and pull it for
nighttime use.

Automatic Dimming Rearview Mirror

The vehicle may have an automatic dimming rearview
mirror.
®
Vehicles with OnStar have three additional control
®
buttons for the OnStar
for more information about OnStar
subscribe to it. See OnStar
more information about the services OnStar
system. See your dealer/retailer
®
and how to
®
System on page 2-64 for
®
provides.