Received it also via email. Legal info:
. Offer Details: Offer may be transferred to an individual residing in the same household (same address) as the eligible recipient noted on this mailing. Transferee must provide proof of address. Authorization Number and PIN required. Offer is nonnegotiable and not redeemable for cash. Only one original Authorization Number may be used per eligible transaction and each Authorization Number may be used only once. You must purchase an eligible new 2017 or 2018 GM vehicle at a participating Chevrolet, Buick, GMC or Cadillac dealer from dealer stock by 8/31/2017. Excludes 2017 Chevrolet Spark, Sonic, SS, Colorado 2SA, Cruze Sedan 1SM, Malibu 1VL, Suburban L96, Traverse 1SM; 2017/2018 Equinox 1SM; 2017 Buick 1SV models; 2017 GMC Acadia 1SV, Canyon 2SA; Terrain 1SL; 2018 Terrain 2SA; 2017 Cadillac CTS-V and XTS W30. 90-day deferred payment option available for well-qualified applicants. Must finance through GM Financial. Down payment required at signing if applicable. Finance charges accrue from date of purchase. 90-Day Deferred payment option not available in FL, PA or TX. Financing of the new vehicle is subject to credit approval. Not all customers will qualify for financing. Not compatible with other offers. Take delivery by 8/31/2017. See dealer for details.Dealer Instructions: Please refer to Corporate Program Number 17-40CBI, incentive code KZC.