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 v ...

Transferring Service

Push to request account transfer eligibility information. The Advisor can assist in canceling or removing account information. If OnStar receives information that vehicle ownership has changed, ...

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Inspecting your tires and wheel valve stems
Periodically inspect the tire treads for uneven or excessive wear and remove objects such as stones, nails or glass that may be wedged in the tread grooves. Check the tire and valve stems for holes, ...

Luggage Compartment Cover
Luggage or other cargo placed in the luggage compartment can be hidden from view by a luggage compartment cover. However, the luggage compartment covers are not designed to support items loaded on ...

HD RadioTM Technology (Digital AM and FM Radio) (type D audio)
HD Radio Technology is fueling the digital radio revolution in the United States and around the world. The digital technology enables broadcasters to offer new and unique FM content via HD2 ...