Cruise Grade Braking Description: Purpose

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.

Cruise grade braking assists when driving on a downhill grade.
It maintains vehicle speed by automatically implementing a shift schedule that uses the engine and the transmission to slow the vehicle.