Of all the places you can go to take care of your car or truck, only one lets you earn up to 10% of your parts and service costs towards a new GM vehicle, your GM dealer. Because only your GM dealer is a member of the GM Cards New Accelerated Earnings Network, a select group of businesses that can double your GM MasterCard earnings with no earnings cap, which helps you get a new car or truck, the GM Card, today's financial vehicle.