Sierra 2500HD trim. Dual Zone A/C, 4x4, 'More upscale than the Chevy Silverado.' -newCarTestDrive.com. READ MORE! KEY FEATURES INCLUDE 4x4, Dual Zone A/C. 4-Wheel ABS, 4-Wheel Disc Brakes, Vehicle Anti-Theft System. EXPERTS ARE SAYING newCarTestDrive.com's review says 'All Sierras deliver a smooth, comfortable ride among the full-size pickups.'. Pricing analysis performed on 5/26/2017. Please confirm the accuracy of the included equipment by calling us prior to purchase.