General Motors is issuing two more recalls, both on the 2015 Chevrolet Corvette, according to stop-delivery orders sent to dealers today. The recalls, GM’s first in more than a month, bring its total number for the year to 67. They cover problems with airbags and parking brake cables on a total of nearly 2,800 cars, though very few have been sold to customers, a GM spokesman said. Neither recall has been announced publicly yet, and parts are not available for the airbag repair. They come amid strong sales of the redesigned Corvette Stingray, forcing dealers to turn down potential buyers until the problems are resolved. GM sold 2,679 Corvettes in August vs. 655 during the same month last year.