Headlamp Aiming; Bulb Replacement; Halogen Bulbs; High Intensity Discharge - GMC 2011 Acadia Owner's Manual

10-30 Vehicle Care

Headlamp Aiming

Headlamp aim has been preset at
the factory and should need no
further adjustment.
However, if your vehicle is damaged
in a crash, the headlamp aim may
be affected. Aim adjustment to
the low-beam headlamps may be
necessary if oncoming drivers flash
their high-beam headlamps at you
(for vertical aim).
If the headlamps need to be
re-aimed, it is recommended that
you take the vehicle to your dealer
for service.

Bulb Replacement

For the proper type of replacement
bulbs, see Replacement Bulbs on
page 10 31.
For any bulb changing procedure
not listed in this section, contact
your dealer.

Halogen Bulbs

WARNING
Halogen bulbs have pressurized
gas inside and can burst if you
drop or scratch the bulb. You or
others could be injured. Be sure
to read and follow the instructions
on the bulb package.
I n f o r ma t i o n P r o v i d e d b y :

High Intensity Discharge

(HID) Lighting

WARNING
The low beam high intensity
discharge lighting system
operates at a very high voltage.
If you try to service any of the
system components, you could
be seriously injured. Have your
dealer or a qualified technician
service them.
The up level vehicle has HID
headlamps. After an HID headlamp
bulb has been replaced, the beam
might be a slightly different shade
than it was originally. This is normal.