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Check out all these great Heavy-Duty Trailering Package, Preferred Equipment Group 2Z7 (Hitch Guidance, Tow/Haul Mode, and UltraSonic Rear Park Assist), 3.42 Rear Axle Ratio, 4-Wheel Disc Brakes, 6 Speakers, 6-Speaker Audio System Feature, ABS bra...Fred Anderson Chevrolet Buick GMC · Over 4 weeks ago on vAuto, Inc.(registration req.)