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 2018-2023 Owners Manual: Power Windows
Warning Children could be seriously injured or killed if caught in the path of a closing window. Never leave the Remote Keyless Entry (RKE) transmitter in a vehicle with children. When there are children in the rear seat, use the window lockout switch to prevent operation of the windows...
GMC Terrain 2018-2023 Owners Manual: Alerting the Driver
If ACC is engaged, driver action may be required when ACC cannot apply sufficient braking because of approaching a vehicle too rapidly. When this condition occurs, six red lights will flash on the windshield. Either eight beeps will sound from the front, or both sides of the Safety Alert Seat will pulse five times...
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