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:
Vehicle Care
To help keep the vehicle looking
like new, vehicle care products
are available from your dealer.
For information on how to clean and
protect the vehicle’s interior and
exterior, see Interior ...
Auto Door Unlock
This allows selection of which of the doors will automatically unlock when
the vehicle is shifted into P (Park).
Press the MENU/SELECT knob when Auto Door Unlock is highlighted. Turn the
knob to ...
Recreational Vehicle Towing
Recreational vehicle towing means towing the vehicle behind another vehicle
– such as behind a motor home. The two most common types of recreational
vehicle towing are known as dinghy towing and dol ...