Serving Central Texas and beyond since 1909. Come experience the Covert Commitment today!2026 GMC Sierra 2500HD AT4X$8,000 off MSRP!10-Speed Automatic, 4WD, Obsidian Rush Leather.You've done your research, so stop by Covert Buick GMC at 11750 Research Blvd Suite D, Austin, TX 78759 soon to take a test drive of this great vehicle! *Purchase price ONLY. Please call and verify the details and availability of the vehicle. Price includes rebates, incentives, and dealer discounts. Tax, title, license & dealer fees are not included. May not be available with special finance, lease or APR offers. See Dealer for full details and disclosures.