GMC Terrain: Driving on Grades - Driving Characteristics and Towing Tips - Towing - Driving and Operating - GMC Terrain Owner's ManualGMC Terrain: Driving on Grades

Reduce speed and shift to a lower gear before starting down a long or steep downgrade. If the transmission is not shifted down, the brakes might have to be used so much that they would get hot and no longer work well.

The vehicle can tow in D (Drive). Use a lower gear if the transmission shifts too often.

When towing at high altitude on steep uphill grades, engine coolant will boil at a lower temperature than at normal altitudes. If the engine is turned off immediately after towing at high altitude on steep uphill grades, the vehicle may show signs similar to engine overheating. To avoid this, let the engine run while parked, preferably on level ground, with the transmission in P (Park) for a few minutes before turning the engine off. If the overheat warning comes on, see Engine Overheating on page 10‑20.

    Turn Signals When Towing a Trailer
    The turn signal indicators on the instrument panel flash whenever signaling a turn or lane change. Properly hooked up, the trailer lamps also flash, telling other drivers the vehicle is turning, c ...

    Parking on Hills
    WARNING Parking the vehicle on a hill with the trailer attached can be dangerous. If something goes wrong, the rig could start to move. People can be injured, and both the vehicle and the trailer ...

    See also:

    Power Liftgate 3/4 Mode
    To program the liftgate opening height: 1. Turn the liftgate switch to either the MAX , or the 3/4 mode position and power open the liftgate. 2. Stop the liftgate movement at the desired height by ...

    Seat belts
    Make sure that all occupants are wearing their seat belts before driving the vehicle. ■ Correct use of the seat belts ● Extend the shoulder belt so that it comes fully over the shou ...

    Power Sunroof — If Equipped
    The power sunroof switch is located between the sun visors on the overhead console. Power Sunroof Switch WARNING! • Never leave unattended children in a vehicle with the key in the ignitio ...