SBZA Detection Zones
The SBZA sensor covers a zone of approximately one lane over from both sides of the vehicle, 3.5m (11 ft). This zone starts at each side mirror and goes back approximately 5.0m(16 ft). The height of the zone is approximately between 0.5m(1.5 ft) and 2.0m(6 ft) off the ground.
Use caution while changing lanes when towing a trailer, as the SBZA detection zones do not change when a trailer is towed.
See also:
Maintenance Replacement Parts
Replacement parts identified here by name, part number, or specification can
be obtained from your dealer.
...
Unable to Connect to OnStar
Message
If there is limited cellular coverage
or the cellular network has reached
maximum capacity, this message
may come on. Push to try the
call again or try again after driving a
few miles into ...
Transfer Case
If the vehicle is equipped with All-Wheel Drive, be sure to perform the lubricant
checks described in this section. ...