Experience the ultimate in rugged capability and premium comfort with this exceptional 2021 GMC Sierra 1500 AT4. Boasting a powerful EcoTec3 5.3L V8 engine paired with a smooth 10-speed automatic transmission, this Sierra 1500 AT4 delivers impressive 4WD performance and efficiency, with an EPA-estimated 16 city/21 highway mpg.<br><br>Highlighted features include:<br>• Remote start<br>• 360-degree camera<br>• Power sunroof/moonroof<br><br>The AT4 Premium Package takes this Sierra to the next level, adding:<br>• HD Surround Vision with 2 Trailer View Camera Provisions<br>• Rear Camera Mirror<br>• Bed View Camera<br>• Multicolor 15 Diagonal Head-Up Display<br><br>The Technology Package further enhances the driving experience with:<br>• Adaptive Cruise Control<br>• Forward Collision Alert<br>• Lane Keep Assist with Lane Departure Warning<br>• Automatic Emergency Braking<br><br>Elevate your adventures with the rugged, off-road-ready Sierra 1500 AT4. Its premium Bose audio system, heated and ventilated leather-appointed front seats, and host of advanced safety features create an unparalleled blend of capability and comfort.<br><br>This Sierra 1500 AT4 is the perfect companion for your active lifestyle, whether tackling challenging terrain or enjoying a comfortable commute. Experience the power and refinement that make the GMC Sierra 1500 AT4 a standout in the full-size truck segment.<br><br>Welcome to Castle Buick GMC, your top destination for quality used cars, trucks, and SUVs in North Riverside, IL. Customers from Cicero, Chicago, Berwyn, Oak Park, Brookfield, Maywood, and Broadview choose us for a reliable, customer-focused buying experience.<br><br>Browse our wide selection of used vehicles, certified pre-owned Buick & GMC models, and affordable options under $10,000—all competitively priced and inspected for quality. Whether shopping online or in-store, you'll see why Castle Buick GMC is one of Chicagoland's most trusted used-car dealerships.<br><br>For questions or a test drive, call (708) 853-3542.<br>Price excludes tax, title, and a $367.70 doc fee.

Castle Buick GMC
7400 Cermak Rd
North Riverside, IL 60546

Additional Error Text: The Model Year decoded for this VIN may be incorrect. If you know the Model year, please enter it and decode again to get more accurate information.
Body Class: Pickup
Brake System Type: Hydraulic
Cab Type: Crew/Super Crew/Crew Max
Curtain Air Bag Locations: All Rows
Displacement Cc: 5300.0
Displacement Ci: 323.4258437020811049
Displacement L: 5.3
Doors: 4
Drive Type: 4WD
Engine Model: L84 - DI, ALUM, GEN 5, VAR 2
Engine Number Of Cylinders: 8
Front Air Bag Locations: 1st Row (Driver and Passenger)
Fuel Type Primary: Gasoline
Gross Vehicle Weight Rating From: Class 2E: 6,001 - 7,000 lb (2,722 - 3,175 kg)
Other Restraint System Info: AY0 - Active Manual Belts
Seat Belt Type: Manual
Series: 1500
Side Air Bag Locations: 1st Row (Driver and Passenger)
Tire Pressure Monitoring System Tpms Type: Direct
Trim: AT4
Vehicle Descriptor: 3GTP9EED*MG
Vehicle Type: TRUCK