Add-on Electrical Equipment

The OnStar system is integrated into the electrical architecture of the vehicle. Do not add any electrical equipment. See Add-On Electrical Equipment on page 9‑112. Added electrical equipment may interfere with the operation of the OnStar system and cause it to not operate.

    See also:

    Airbag System Messages
    SERVICE AIR BAG This message displays if there is a problem with the airbag system. Have your dealer inspect the system for problems. See Airbag Readiness Light on page 5‑20 and Airbag System ...

    Tachometer
    The tachometer displays the engine speed in revolutions per minute (rpm). For a description of how Grade Braking affects vehicle speed while the Tow/Haul Mode is activated, see Tow/Haul Mode on page 9 ...

    Confident and agile driving experience
    Two new engines are offered on all GMC Terrain models, each with fuel-saving direct injection and variable valve timing technology. Vehicle highlights include: New 3.0L DOHC direct injected V-6 ...