Driving and Operation

Anti-Lock Brake System (ABS)

~1min read

This vehicle has an Anti-Lock Brake System (ABS), an advanced electronic braking system that helps prevent wheel lockup during braking.

When the vehicle begins to move, ABS checks itself. A momentary motor or clicking noise may be heard during this test, and the brake pedal may be felt to pulsate slightly. This is normal.

GMC Terrain. Antilock Brake System (ABS)

If there is a problem with ABS, the warning light stays on. See Anti-Lock Brake System (ABS) Warning Light.

When driving on a wet road, if it becomes necessary to brake hard and continue braking to avoid a sudden obstacle, the computer controls wheel deceleration. If one of the wheels is about to stop, the computer applies the brakes separately at each wheel.

ABS can modulate the brake pressure at each wheel as needed, faster than any driver could. This can help you steer around an obstacle while braking hard.

As the brakes are applied, the computer continues to receive updates on wheel speed and adjusts brake pressure accordingly.

Remember: ABS does not change the time needed to move your foot to the brake pedal or always reduce stopping distance. If you are following too closely, there may not be enough time to stop if the vehicle ahead suddenly slows or stops. Always leave enough space ahead to stop, even with ABS.

Using ABS

Do not pump the brakes. Just press the brake pedal down firmly and let ABS work. You may hear the ABS pump or motor running and feel the brake pedal pulsate. This is normal.

Emergency Braking

ABS allows you to steer and brake at the same time. In many emergency situations, steering can help more than even the best braking.

Test yourself

A quick GMC Terrain quiz: every answer comes with an explanation and a link to the manual page.