Why is my GM Test Drive Coupon code not working at checkout?

As of April 13, 2020, GM Test Drive / American Hole in One coupon codes cannot be used online. Please contact customer service to redeem your coupon code by calling 1-877-969-1952 or email onlinesupport@travismathew.com. American Hole in One codes will be allowed to be redeemed through Customer Service through June 1, 2020.