Theft-Deterrent Feature
TheftLock® is designed to discourage theft of the vehicle's radio by learning a portion of the Vehicle Identification Number (VIN).
The radio does not operate if it is stolen or moved to a different vehicle.
See also:
Interior
The Sierra showcases two different interior designs. Work Truck and SLE
models are more utility-minded, with large controls and door handles that can be
operated while wearing gloves. The SLT offe ...
EQ Settings
The EQ settings are selected through the tone menu. Press the left or right arrows
to cycle through the EQ options. The available choices are Pop, Rock, Jazz, Classical,
and Talk. ...
Brake System Warning Light
The vehicle brake system consists of two hydraulic circuits. If one circuit is
not working, the remaining circuit can still work to stop the vehicle. For normal
braking performance, both circuits ...