GMC Terrain: Setting Cruise Control / Reducing Speed While Using Cruise Control

If the cruise control system is already activated:

  • Press and hold –SET until the desired lower speed is reached, then release it.
  • To slow down in small increments, briefly press –SET. For each press, the vehicle goes about 1 km/h (1 mph) slower.

The speedometer reading can be displayed in either English or metric units.

See Instrument Cluster (Base and Midlevel) or Instrument Cluster (Uplevel). The increment value used depends on the units displayed.

    Increasing Speed While Using Cruise Control

    If the cruise control system is already activated: Press and hold +RES on the steering wheel until the vehicle accelerates to the desired speed, then release it...

    Passing Another Vehicle While Using Cruise Control

    Use the accelerator pedal to increase the vehicle speed. When you take your foot off the pedal, the vehicle will slow down to the previous set cruise speed...

    Other information:

    GMC Terrain 2018-2026 Owners Manual: Roof Rack System


    Warning If something is carried on top of the vehicle that is longer or wider than the roof rack—like paneling, plywood, or a mattress—the wind can catch it while the vehicle is being driven. The item being carried could be violently torn off, and this could cause a collision and damage the vehicle...

    GMC Terrain 2018-2026 Owners Manual: Liftgate


    Warning Exhaust gases can enter the vehicle if it is driven with the liftgate or trunk/hatch open, or with any objects that pass through the seal between the body and the trunk/hatch or liftgate. Engine exhaust contains carbon monoxide (CO) which cannot be seen or smelled...

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