Following Distance
Stay at least twice as far behind the vehicle ahead as you would when driving the vehicle without a trailer.
This can help to avoid heavy braking and sudden turns.
See also:
Object Detection System Messages
PARK ASST (Assist) BLOCKED SEE OWNERS MANUAL
This message displays if there is something interfering with the park assist system. See Ultrasonic Parking Assist on page 9‑34 for more information ...
Customer Assistance Offices (U.S. and Canada)
GMC encourages customers to call the toll-free number for assistance.
However, if a customer wishes to write or e-mail GMC, the letter should be addressed to:
United States
GMC Customer Assistance ...
Anti-theft Alarm System Messages
THEFT ATTEMPTED
This message displays if the vehicle detects a tamper condition. ...