Vehicle and Power Issues

OnStar services require a vehicle electrical system, wireless service, and GPS satellite technologies to be available and operating for features to function properly. These systems may not operate if the battery is discharged or disconnected.

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    Safety Locks
    The rear door safety locks switch is on the instrument panel. Rear door safety locks prevent passengers from opening the rear doors from inside the vehicle. Press to activate the safety locks. ...

    After Off-Road Driving
    Remove any brush or debris that has collected on the underbody or chassis, or under the hood. These accumulations can be a fire hazard. After operation in mud or sand, have the brake linings cleaned ...

    Performance
    One reason the Acadia gets better gas mileage than traditional SUVs is its V-6 engine. Many full-size SUVs are offered with thirsty V-8s, but the Acadia only comes with a 3.6-liter V-6 that produc ...