Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the vehicle is equipped with the Tire Pressure Monitoring System.
If a diagnostics check is needed between e-mails, push 
, and an Advisor can run a check.
See also:
Defensive Driving
Defensive driving means “always expect the unexpected.” The first step in driving defensively is to wear the safety belt. See Safety Belts on page 3‑15.
• Assume that other road users (pe ...
Blizzard Conditions
Being stuck in snow can be a serious situation. Stay with the vehicle unless there is help nearby.
If possible, use the Roadside Assistance Program (U.S. and Canada) on page 13‑8 or Roadside As ...
Third Row Seats
The third row seatbacks can be folded forward, and the seats can be removed.
To fold the third row seatback:
1. Remove anything on or under the seat.
2. Disconnect the rear safety belt mini-lat ...