Looks like Chevrolet is offering an extra $500 for purchases and leases on most SUVs and the Malibu. Says that it stacks with most other offers, not sure how that would work with Costco though. Maybe @ethanrs, @chevysalesgirl, @ChevyPhil, etc might know more? You need to register for a code to get it.
Available toward the purchase or lease of most 2020/2021 Blazer, Equinox, Malibu, Traverse, Trax and 2021 Trailblazer models. Excludes select base trims. Not available with some other offers. Limit one online code per eligible vehicle transaction. Must provide code at time of purchase or lease. Take new retail delivery by 11/30/20.
it works as a rebate on lease/purchase. it’s compatible with Costco.