• Manufacturer Offers $1,500 cash back on select GMC Sierra 3500HD models $1,500 cash back on select GMC Sierra 1500 models $6,000 cash back or 0.0% APR for 72 months on select GMC Sierra 1500 models $750 USAA Bonus Cash $750 cash back on select GMC Sierra 1500 models $1,000 cash back on select GMC Yukon models