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:
Hands-Free Calling
1. Push . System responds:
“OnStar ready.”.
2. Say “Dial.” System responds:
“Please say the name or number
to call.”.
3. Say the entire number without
pausing, including a “1” and the
area c ...
Ignition Transmission
Lock Check
While parked, and with the parking
brake set, try to turn the ignition to
LOCK/OFF in each shift lever
position.
- The ignition should turn to
LOCK/OFF only when the shift
lever is in P (Pa ...
Transfer Case
If the vehicle is equipped with All-Wheel Drive, be sure to perform the lubricant
checks described in this section. ...






