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:
Sensors
The solar sensor, located in the defrost grille in the middle of the instrument panel, monitors the solar heat. Do not cover the solar sensor or the system will not work properly.
The interior te ...
Passenger Airbag Status Indicator
The vehicle has a passenger sensing system. See Passenger Sensing System on page
3‑28 for important safety information. The overhead console has a passenger airbag
status indicator.
Unite ...
Returning the Seat to the Seating Position
To return the seatback to the seating position:
1. From the rear of the vehicle, raise the seatback to the upright position using the pullstrap on the back of the third row seat, or lift the seatback ...