What's New With the GMC Sierra 1500 Crew Cab AT4?
The 6.2L V8 engine -- the most powerful V8 in its class -- gets even stronger with the AT4 Off-Road Performance Package.
    With the addition of the Performance Air Intake System and Performance Cat-Back Exhaust System, Sierra AT4 equipped with the 6.2L V8 engine now gets 435 horsepower and 469 lb.-ft. of torque -- which is an additional 15 horsepower and 9 lb.-ft. of torque, delivery the sound you want with the performance you need.
AT4 OFF-ROAD PERFORMANCE PACKAGE
Available on AT4 94SB) 4WD models. Compatible with AT4 Premium Package.
- 6.2L EcoTec3 V8 engine with Dynamic Fuel Management
 - 18-inch mud-terrain Goodyear Wrangler Duratrac tires
 - LPO, Performance Accessories Package
 
          -Performance Air Intake System
          -Performance Cat-Back Exhaust System
See the Next Generation GMC Sierra AT4 at Shortline Buick-GMC, 1301 So. Havana St., Aurora, CO 80012 or call us at 303-751-3400.