Costco members can get up to $1,000 off the purchase or lease of a 2024 Chevrolet Blazer EV through Jan. 2. According to CarsDirect, the Blazer EV was added to General Motors’ year-end Costco rebate promotion last Friday. The program runs nationwide, but only for shoppers who have been Costco members since Oct. 31 of this year. The Blazer EV isn’t…