GMC Terrain: Starting and Operating / New Vehicle Break-In

Caution

The vehicle does not need an elaborate break-in. But it will perform better in the long run if you follow these guidelines:

  • Do not drive at any one constant speed, fast or slow, for the first 800 km (500 mi). Do not make full-throttle starts. Avoid downshifting to brake or slow the vehicle.
  • Avoid making hard stops for the first 300 km (200 mi) or so. During this time the new brake linings are not yet broken in. Hard stops with new linings can mean premature wear and earlier replacement. Follow this breaking-in guideline every time you get new brake linings.

Following break-in, engine speed and load can be gradually increased.

    Starting and Operating

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    Ignition Positions

    The vehicle has an electronic keyless ignition with pushbutton start. The Remote Keyless Entry (RKE) transmitter must be in the vehicle for the system to operate...

    Other information:

    GMC Terrain 2018-2026 Owners Manual: Driving for Better Fuel Economy


    Driving habits can affect fuel mileage. Here are some driving tips to get the best fuel economy possible: Set the climate controls to the desired temperature after the engine is started, or turn them off when not required. Avoid fast starts and accelerate smoothly...

    GMC Terrain 2018-2026 Owners Manual: If the Off Indicator Is Lit for an Adult-Sized Occupant


    If a person of adult size is sitting in the front outboard passenger seat, but the OFF indicator is lit, it could be because that person is not sitting properly in the seat or that the child restraint locking feature is engaged. Use the following steps to allow the system to detect that person and enable the front outboard passenger frontal airbag: Turn the vehicle off...

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