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: Curves in the Road
Warning On curves, ACC may not detect a vehicle ahead in your lane. You could be startled if the vehicle accelerates up to the set speed, especially when following a vehicle exiting or entering exit ramps. You could lose control of the vehicle or crash...
GMC Terrain 2018-2025 Owners Manual: Seat Adjustment
Warning You can lose control of the vehicle if you try to adjust a driver seat while the vehicle is moving. Adjust the driver seat only when the vehicle is not moving. To adjust the seat position: Pull the handle at the front of the seat cushion to unlock it...
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