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:
Lane Departure Warning (LDW)
The vehicle may have a Lane Departure Warning (LDW)
system. Read this entire section before using the system.
WARNING:
The Lane Departure Warning (LDW) system does
not steer the vehicle and is o ...
Safety Locks
The rear door safety locks prevent passengers from opening the rear doors from
inside the vehicle.
Press to activate the safety locks.
The indicator light will illuminate.
This switch also di ...
Programmable Automatic Door
Locks
Your vehicle is programmed so that, when the doors are
closed, the ignition is on, and the shift lever is moved out
of P (Park), all the doors will lock. The doors will unlock
every time you sto ...