Sierra HD Safety

Forward Collision Alert​

Forward Collision Alert can alert you when it detects a front-end collision is imminent with a vehicle ahead of you. The system can also alert you if you are following a detected vehicle much too closely.

Lane Departure Warning

Lane Departure Warning can provide alerts to help you avoid crashes due to unintentionally drifting out of your lane when your turn signal is not activated.

Following Distance Indicator

Following Distance Indicator can provide you with the following gap time (or headway) to a moving vehicle you are detected to be following to help you know if you are following much too closely.

Rear Cross Traffic Alert

Rear Cross Traffic Alert can alert you to detected left- or right-cross traffic behind you when in Reverse.

Safety Alert Seat

Safety Alert Seat provides you the option of getting seat vibration pulses on the seat-bottom instead of beeps for crash avoidance alerts.

Enhanced Automatic Emergency Braking

Automatic Emergency Braking operates below 80 km/h, and can alert you when it detects a front-end collision is imminent with a vehicle ahead of you. It also can help reduce the collision’s severity or avoid the ​collision by automatically applying brakes if you have not already, or by enhancing driver braking.


Front and Rear Park Assist

Front and Rear Park Assist provides distance alerts to nearby detected objects to help you park and avoid objects at low speeds.

Forward Collision Alert

Forward Collision Alert can alert you when it detects a front-end collision is imminent with a vehicle ahead of you. The system can also alert you if you are following a detected vehicle much too closely.

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Lane Departure Warning

Lane Departure Warning can provide alerts to help you avoid crashes due to unintentionally drifting out of your lane when your turn signal is not activated.

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Following Distance Indicator

Following Distance Indicator can provide you with the following gap time (or headway) to a moving vehicle you are detected to be following to help you know if you are following much too closely.

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Rear Cross Traffic Alert

Rear Cross Traffic Alert can alert you to detected left- or right-cross traffic behind you when in Reverse.

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Safety Alert Seat

Safety Alert Seat provides you the option of getting seat vibration pulses on the seat-bottom instead of beeps for crash avoidance alerts.

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Enhanced Automatic Emergency Braking

Automatic Emergency Braking operates below 80 km/h, and can alert you when it detects a front-end collision is imminent with a vehicle ahead of you. It also can help reduce the collision’s severity or avoid the ​collision by automatically applying brakes if you have not already, or by enhancing driver braking.

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Front and Rear Park Assist

Front and Rear Park Assist provides distance alerts to nearby detected objects to help you park and avoid objects at low speeds.


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Safety or driver assistance features are no substitute for the driver’s responsibility to operate the vehicle in a safe manner. The driver should remain attentive to traffic, surroundings and road conditions at all times. Visibility, weather, and road conditions may affect feature performance. Read the vehicle’s Owner's Manual for important feature limitations and information.