OnStar Vehicle Diagnostics can perform a vehicle check every month. It will check
the engine, transmission, antilock brakes, and other major vehicle systems. It also
checks the tire pressures, if the vehicle is equipped with the Tire Pressure Monitoring
System. If an On-Demand Diagnostics check is needed, press
, and an Advisor can run a check.
Connections
OnStar Additional InformationSeat Adjustment
Manual Seats
To adjust the seat:
Lift the bar under the front edge of the seat cushion to unlock the seat.
Slide the seat to the desired position and release the bar.
Try to move the seat back and forth to be sure it is locked in place.
See Seat Adjustment on page 3-5.
Seat Height A ...
Shifting out of Park
This vehicle is equipped with a shift lock control. The shift lock control is
designed to:
Prevent ignition key removal unless the shift lever is in P (Park) with
the shift lever button fully released.
Prevent movement of the shift lever out of P (Park) unless the ignition
is in ON/RUN ...
Traction Control/Electronic Stability Control
The TCS limits wheel spin. The system is on when the vehicle is started.
The StabiliTrak system assists with directional control of the vehicle in difficult
driving conditions. The system is on when the vehicle is started.
To turn off traction control, press and release the TCS/StabiliTrak bu ...