Park Tilt Mirrors
If the vehicle is equipped with memory mirrors, there is an option to have the mirrors tilt down, when in R (Reverse), to more easily see the ground near the vehicle.
When the vehicle is shifted to R (Reverse), both the driver and passenger mirrors will tilt downward. They will return to their previous position when the vehicle is shifted out of R (Reverse), the ignition is turned to OFF, or the vehicle is left in R (Reverse) for an extended period of time.
This feature can be turned on or off. See Vehicle Personalization on page 5‑33.
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 ...
FM Stereo
FM signals only reach about 16 to 65 km (10 to 40 mi). Although the radio has a built-in electronic circuit that automatically works to reduce interference, some static can occur, especially around ta ...
OnStar Personal Identification Number (PIN)
A PIN is needed to access some of the OnStar services, like Remote Door Unlock and Stolen Vehicle Assistance. You will be prompted to change the PIN the first time when speaking with an Advisor. To ch ...