GMC Terrain: Driving and Operating / Brakes

Tow/Haul Mode

For information on the Tow/Haul Mode, see Driver Mode Control. Automatic Engine Grade Braking Automatic Engine Grade Braking assists when driving downhill...

Antilock Brake System (ABS)

This vehicle has an Antilock Brake System (ABS), an advanced electronic braking system that helps prevent a braking skid. When the vehicle begins to drive away, ABS checks itself...

Other information:

GMC Terrain 2018-2026 Owners Manual: Hill Descent Control (HDC)

HDC can be used when driving downhill. It sets and maintains vehicle speed while descending a very steep incline in a forward or reverse gear. The HDC switch is on the center console. Press to enable or disable HDC. Vehicle speed must be below 50 km/h (31 mph)...

GMC Terrain 2018-2026 Owners Manual: Older Children

Older children who have outgrown booster seats should wear the vehicle’s seat belts. The manufacturer instructions that come with the booster seat state the weight and height limitations for that booster. Use a booster seat with a lap-shoulder belt until the child passes the fit test below: Sit all the way back on the seat...