GMC Terrain: Exterior Lighting / Daytime Running Lamps (DRL)
DRL can make it easier for others to see the front of your vehicle during the day. Fully functional DRL are required on all vehicles first sold in Canada.
The DRL system comes on in daylight when the following conditions are met:
- The ignition is on.
- The exterior lamp control is in AUTO.
- The vehicle is not in P (Park).
- The light sensor determines it is daytime.
When the DRL are on, the taillamps, sidemarker lamps, instrument panel lights, and other lamps will not be on. The instrument cluster will be lit.
The DRL turn off when the
headlamps are turned to 
or the
ignition is off. For vehicles first sold
in Canada, the DRL can only be
turned off when the vehicle is
parked.
The regular headlamp system should be turned on when needed.
Headlamp High/Low-Beam Changer anf Flash-to-Pass
Headlamp High/Low-Beam Changer
Push the turn signal lever away
from you and release, to turn the
high beams on. To return to low
beams, push the lever again or pull
it toward you and 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...
Other information:
GMC Terrain 2018-2025 Owners Manual: Info Pages
The following is the list of all possible DIC info page displays. Some may not be available for your particular vehicle. Some items may not be turned on by default but can be turned on through the Options app. See “Info Page Options” earlier in this section...
GMC Terrain 2018-2025 Owners Manual: Dome Lamps
The dome lamp controls are in the overhead console. To operate, press the following buttons: : Press to turn off the dome lamps when a door is open. An indicator light on the button will turn on when the dome lamp override is activated. Press OFF again to deactivate this feature and the indicator light will turn off...
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