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 InformationSafety Belt Extender
If the vehicle's safety belt will fasten around you, you should use it.
But if a safety belt is not long enough, your dealer will order you an extender.
When you go in to order it, take the heaviest coat you will wear, so the extender
will be long enough for you. To help avoid personal inju ...
All-Season Tires
This vehicle may come with all-season tires. These tires are designed to provide
good overall performance on most road surfaces and weather conditions. Original
equipment tires designed to GM's specific tire performance criteria have a TPC specification
code molded onto the sidewall. Origi ...
Starter Switch Check
Warning
When you are doing this inspection, the vehicle could move suddenly.
If the vehicle moves, you or others could be injured.
Before starting this check, be sure there is enough room around the vehicle.
Apply both the parking brake and the regular brake.Do not use the accelerator
pe ...