Flash-To-Pass; Daytime Running Lamps (Drl)/Automatic Headlamp - GMC Acadia 2011 Owner's Manual

Flash-to-Pass

This feature is used to signal to
the vehicle ahead that you want
to pass.
If the headlamps are off or in
the low beam position, pull the
turn signal lever toward you to
momentarily switch to high beams.
Release the lever to turn the
high-beam headlamps off.
Daytime Running
Lamps (DRL)/Automatic
Headlamp System
Daytime Running Lamps (DRL) can
make it easier for others to see the
front of your vehicle during the day.
Fully functional daytime running
lamps are required on all vehicles
first sold in Canada.
The DRL system makes either
the low-beam headlamps come
on at a reduced brightness or
the DRL lights, for vehicles with
High Intensity Discharge (HID)
headlamps when the following
conditions are met:
The ignition is in the ON/RUN
position.
The exterior lamps control is
in AUTO.
The engine is running.
Lighting
When the DRL are on, the regular
headlamps, taillamps, sidemarker,
and other lamps will not be on.
The instrument panel and cluster
will also not be lit.
For vehicles with HID headlamps,
if the DRL are on and the left or
right turn signal lamp is turned on,
the left or right DRL will go off.
The headlamps automatically
change from DRL to the regular
headlamps depending on the
darkness of the surroundings.
The other lamps that come on with
the headlamps will also come on.
When it is bright enough outside,
the headlamps will go off and the
DRL will come on.
The regular headlamp system
should be turned on when needed.
Do not cover the light sensor on top
of the instrument panel because it
works with the DRL.
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