General Motors Corp.’s new chief executive Fritz Henderson said yesterday that more of the automaker’s plants could close — beyond the five GM said it would shutter when it submitted a restructuring plan — as part of GM’s effort to meet new, tougher requirements for government aid.

Henderson also said GM is still talking with potential buyers of the Hummer brand, and a decision on the brand’s fate will come in the next few weeks.

GM also launched its Total Confidence program yesterday that will make car payments for customers who lose their jobs.