GM employees, retirees, dealership employees and suppliers eligible for vehicle discounts can stack discounts with GM Rewards points.

One of the main changes is simplifying the program ... GM Rewards member regardless of where they live. The GM Rewards loyalty program now works through GM Rewards Mastercard, serviced by Barclays ...

The automaker has more than 13 million GM Rewards members ... One of the main changes is simplifying the program, streamlining the various separate branded rewards to one, Darmo said.