
GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-MidEast-
15170043) - 2022 - CRC - 5/25/21
Lighting
131
Daytime Running Lamps (DRL)
DRL can make it easier for others to see the
front of your vehicle during the day.
The dedicated DRL will come on when all of
the following conditions are met:
.
The ignition is on.
.
The exterior lamp control is in AUTO.
.
The light sensor determines it is daytime.
The taillamps, sidemarker lamps, instrument
panel lights, and other lamps will not be on.
When it begins to get dark, the automatic
headlamp system switches from DRL to the
headlamps.
To turn off the DRL, turn the exterior lamp
control to
O
and then release.
Automatic Headlamp System
When the exterior lamp control is set to
AUTO and it is dark enough outside, the
headlamps come on automatically.
There is a light sensor on top of the
instrument panel. Do not cover the sensor.
The system may also turn on the headlamps
when driving through a parking garage or
tunnel.
If the vehicle is started in a dark garage, the
automatic headlamp system comes on
immediately. If it is light outside when the
vehicle leaves the garage, there is a slight
delay before the automatic headlamp
system changes to the Daytime Running
Lamps (DRL). During that delay, the
instrument cluster may not be as bright as
usual. Make sure the instrument panel
brightness control is in the full bright
position. See
When it is bright enough outside, the
headlamps will turn off or may change
to DRL.
The automatic headlamp system turns off
when the exterior lamp control is turned to
O
or the ignition is off.
Lights On with Wipers
If the windshield wipers are activated in
daylight with the engine on, and the
exterior lamp control is in AUTO, the
headlamps, parking lamps, and other
exterior lamps come on. The transition time
for the lamps coming on varies based on
wiper speed. When the wipers are not
operating, these lamps turn off. Move the
exterior lamp control to
O
or
;
to disable
this feature.