GMC Terrain: Daytime Running Lamps (DRL) - Exterior Lighting - Lighting - GMC Terrain Owner's ManualGMC Terrain: Daytime Running Lamps (DRL)

Daytime Running Lamps (DRL) system makes the low-beam headlamps come on at a reduced brightness in daylight when the following conditions are met:

○ The ignition is on.
○ The exterior lamp band is in the automatic position.
○ The transmission is not in P (Park).
○ The light sensor determines it is daytime.
○ The parking brake is released. Fully functional Daytime Running Lamps (DRL) are required on all vehicles first sold in Canada.

When the DRL are on the taillamps, sidemarker, instrument panel lights and other lamps will not be on. The instrument panel cluster will be lit. When the exterior lamp band is turned to the headlamp position, the low-beam headlamps come on. The other lamps that come on with the headlamps will also come on. To idle your vehicle with the DRL off, move the shift lever to P (Park). The DRL will stay off until the shift lever is moved out of the P (Park) position.

The regular headlamp system should be turned on when needed.

    Flash-to-Pass
    The flash&-to&-pass feature works with the low beams or Daytime Running Lamps (DRL) on or off. To flash the high beams, pull the turn signal/lane change lever all the way toward you, then ...

    Automatic Headlamp System
    When it is dark enough outside, the headlamps come on automatically. Do not cover the light sensor on top of the instrument panel or the headlamps will come on when they are not needed. The syst ...

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