Visit us online today at or give us a call at (540) 551-4719! br The premier GMC dealership in the Winchester, VA area is without a doubt Shenandoah Buick GMC! Take one step on the lot of Shenandoah Buick GMC, near Winchester, VA, and you will quickly see why they are the premier. Shenandoah Buick GMC has the premier GMC inventory, from pre-owned to new. Shenandoah Buick GMC has the premier GMC service department. Shenandoah Buick GMC has the premier GMC parts department.