Mark Allen Buick GMC 6363 OK-66, Tulsa, OK 74131 Phone: (918) 446-9696 Website: https://www.markallen-buick-gmc.com/ Email Address: [email protected] Welcome to Mark Allen Buick GMC. Let’s do business!! Mark Allen Buick GMC has a large inventory of new and used Buick and GMC cars. We are located just a short drive from anywhere in the Tulsa Metro and our staff can help with professional advice to help you find the perfect GMC car, truck or SUV. We have a variety of colors and trims available for our vehicle... read full review »