OnStar rolls out at Best Buy

Car consumers no longer have to buy a General Motors vehicle to get OnStar. An aftermarket version of the system goes on sale July 24 at Best Buy.

The OnStar-equipped rearview-mirror setup costs $299.99 to purchase and $75 to install. Best Buy offers on-site installation through its network of more than 1,000 auto bays nationwide.

The aftermarket system offers the same core features as on the original-equipment unit that comes with most new GM cars and trucks. OnStar has automatic crash response, turn-by-turn navigation, hands-free calling, stolen-vehicle location assistance, emergency services and roadside assistance.

The system is compatible with 90 million vehicles on the road today that are 10 years old and younger. This includes new or recent launches. Customers can check their cars' compatibility at the OnStar Web site.

To see if your car is compatible, click on the OnStar Web site.

By Julie Alvin