SBZA Detection Zones
The SBZA sensor covers a zone of approximately one lane over from both sides of the vehicle, or 3.5m(11 ft). This zone starts at each side mirror and goes back approximately 5.0 m(16 ft). The height of the zone is approximately between 0.5 m(1.5 ft) and 2.0m(6 ft) off the ground.
The SBZA detection zones do not change if the vehicle is towing a trailer. So be extra careful when changing lanes while towing a trailer.
See also:
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The coolant level should be at or above the FULL
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Unable to Connect to OnStar
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If there is limited cellular coverage
or the cellular network has reached
maximum capacity, this message
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This message displays if there is a problem with the transmission. See your dealer.
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This message displays when the transmission needs to be shifted to P (Park).
...