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:
Securing Child Restraints (Front Passenger Seat)
This vehicle has airbags. A rear seat is a safer place to secure a forward-facing
child restraint. See Where to Put the Restraint on page 3‑41.
In addition, the vehicle has a passenger sensin ...
Ending a Call
Press to end a call. ...
Fuel
Use of the recommended fuel is an important part of the proper maintenance of
this vehicle. To help keep the engine clean and maintain optimum vehicle performance,
we recommend the use of gasoline ...