At Brennan Buick GMC, we're here for you throughout the life of your vehicle. If you're in the market for a new or used truck, SUV, or car, visit our dealership to see the best that Brennan Buick GMC has to offer. - Power Sunroof - Technology Package with HD Surround Vision and Rear Camera Mirror - Multicolor 15" Diagonal Head-Up Display - AT4 CarbonPro Edition with Carbon Composite Bed - MultiPro Audio System by Kicker - Driver Alert Package II with Automatic Emergency Braking and Adaptive Cruise Control - Premium GMC Infotainment System with Navigation and Apple CarPlay/Android Auto - SiriusXM with 360L - Heated and Ventilated Front Seats with 10-Way Power Adjustment - Perforated Leather-Appointed Front Seat Trim - Rear Camera Mirror and Bed View Camera - IntelliBeam Automatic High Beam Technology - Integrated Trailer Brake Controller with Hitch Guidance - 18" Machined Aluminum Wheels with Goodyear Wrangler DuraTrac Tires This 2021 GMC Sierra 1500 AT4 delivers capability with refined comfort. The 3.0L turbocharged diesel engine provides 460 lb-ft of torque, paired with a 10-speed automatic transmission and four-wheel drive for confident handling on any terrain. With an estimated 22 mpg city and 26 mpg highway, this truck balances power efficiency with towing and hauling capacity. The AT4 CarbonPro Edition combines premium styling with practical durability. The unique grille surround with black chrome finish, AT4 carbon hard badge, and carbon composite bed distinguish this truck from the standard lineup. Black dual exhaust tips and an AT4 high clearance step complete the aggressive appearance while providing genuine utility. Inside, premium materials and advanced technology create a commanding driving experience. The perforated leather-appointed front seats feature heating and ventilation with 10-way power adjustment and lumbar support. The multicolor head-up display projects navigation and vehicle information directly into your line of sight, while the 8" driver information center keeps essential data accessible. The heated steering wheel and wireless charging pad add daily convenience. Safety and awareness technology are integrated throughout. Driver Alert Package II includes forward collision alert, lane keep assist with lane departure warning, automatic emergency braking, and front pedestrian braking. The adaptive cruise control with following distance indicator helps maintain safe spacing, while IntelliBeam automatically adjusts high beams for optimal visibility. The safety alert seat provides haptic feedback during potential hazards. - 62 Point Inspection - Vehicle History - Powertrain Limited Warranty: 1 Month/1,000 Mile (whichever comes first) - BravoBudget Powertrain Limited Warranty: When you choose a certified used vehicle greater than 10 and less than 15 model years old and/or greater than 100,000 and less than 150,000 miles, you'll get 30-day/1,000-mile-Powertrain Limited Warranty Coverage. Non-GM vehicle coverage terms different in the state of California, see dealer for details. This Sierra 1500 AT4 is GMC BravoBudget certified, ensuring you receive a thoroughly inspected truck with comprehensive warranty coverage. The combination of proven diesel performance, premium appointments, and modern safety features makes this truck ready for work or weekend adventures. Visit us to explore this compelling truck option.

Additional Information

AT4 CarbonPro Edition,AT4 Preferred Package,AT4 Premium Package,AT4 Value Package,Driver Alert Package I,Driver Alert Package II,Preferred Equipment Group 4SB,Technology Package,Trailering Package,6 Speakers,6-Speaker Audio System Feature,AM/FM radio: SiriusXM with 360L,MultiPro Audio System by Kicker,Premium audio system: GMC Infotainment System,Premium Bose 7-Speaker Sound System,Radio data system,Radio: Premium GMC Infotainment Sys w/Multi-Touch,Radio: Premium GMC Infotainment Sys w/Navigation,SiriusXM w/360L,Steering Wheel Audio Controls,Air Conditioning,Automatic temperature control,Electric Rear-Window Defogger,Front dual zone A/C,Rear window defroster,12-Volt Rear Auxiliary Power Outlet,120-Volt Bed Mounted Power Outlet,120-Volt Instrument Panel Power Outlet,Driver Memory,Memory seat,Power driver seat,Power Front Passenger Windows w/Express Up/Down,Power Front Windows w/Driver Express Up/Down,Power Rear Windows w/Express Down,Power steering,Power windows,Remote keyless entry,Remote Vehicle Starter System,Steering wheel mounted audio controls,Universal Home Remote,Auto-Locking Rear Differential,Electrical Lock Control Steering Column,Manual Tilt-Wheel & Telescoping Steering Column,Off-Road Suspension,Speed-sensing steering,Traction control,4-Wheel Disc Brakes,ABS brakes,Dual front impact airbags,Dual front side impact airbags,Front anti-roll bar,Front wheel independent suspension,Keyless Open & Start,Low tire pressure warning,Occupant sensing airbag,Overhead airbag,Power Door Locks,Power Sunroof,Brake assist,Electronic Stability Control,Hill Descent Control,Delay-off headlights,Front fog lights,Fully automatic headlights,Perimeter Lighting,Panic alarm,Security system,Theft Deterrent System (Unauthorized Entry),Adaptive Cruise Control,Speed control,170 Amp Alternator,220 Amp Alternator,Auxiliary External Transmission Oil Cooler,Engine Block Heater,Heavy-Duty Air Filter,AT4 Carbon Hard Badge,AT4 High Clearance Step (LPO),Auto-dimming door mirrors,Black Dual Exhaust Tips,Body-Color Surround Grille,Bumpers: body-color,CarbonPro (Carbon Fiber Composite) Bed,Front License Plate Kit,Heated door mirrors,IntelliBeam Automatic High Beam On/Off,LED Cargo Area Lighting,Power door mirrors,ProGrade Trailering System,Rear step bumper,Rear Wheelhouse Liners,Spray-On Pickup Bed Liner w/AT4 Logo,Unique Grille Surround w/Black Chrome Finish,2 USB Ports,2 USB Ports (1st Row),4.2" Diagonal Color Display Driver Info Center,4G LTE Wi-Fi Hotspot Capable,8" Driver Information Center,Apple CarPlay/Android Auto,Auto-dimming Rear-View mirror,Automatic Emergency Braking,Bed View Camera,Color-Keyed Carpeting Floor Covering,Compass,Console Insert Organizer Tray (LPO),Driver door bin,Driver vanity mirror,Floor-Mounted Center Console,Following Distance Indicator,Forward Collision Alert,Front Pedestrian Braking,Front Prem Floor Liners w/Removable Carpet Insert,Front reading lights,GMC Connected Access Capable,HD Rear Vision Camera,HD Surround Vision w/2 Trailer View Camera Provisions,Heated steering wheel,Illuminated entry,Lane Change Alert w/Side Blind Zone Alert,Lane Keep Assist w/Lane Departure Warning,Multicolor 15" Diagonal Head-Up Display,OnStar & GMC Connected Services Capable,Outside temperature display,Overhead console,Passenger vanity mirror,Rear Camera Mirror,Rear Cross Traffic Alert,Rear Dual USB Charging-Only Ports,Rear Prem Floor Liners w/Removable Carpet Insert,Rear reading lights,Rear seat center armrest,Safety Alert Seat,Tachometer,Telescoping steering wheel,Tilt steering wheel,Trip computer,Ultrasonic Front & Rear Park Assist,Voltmeter,Wireless Charging,10-Way Power Driver Seat Adjuster w/Lumbar,10-Way Power Passenger Seat Adjuster w/Lumbar,Front Bucket Seats,Front Center Armrest,Heated 2nd Row Outboard Seats,Heated Driver & Front Outboard Passenger Seating,Heated front seats,Perforated Leather-Appointed Front Seat Trim,Power passenger seat,Split folding rear seat,Ventilated Driver & Front Passenger Seats,Ventilated front seats,Passenger door bin,Hitch Guidance,Hitch Guidance w/Hitch View,In-Vehicle Trailering App,Integrated Trailer Brake Controller,Red Recovery Hooks,18" x 8.5" Machined Aluminum Wheels,Alloy wheels,Deep-Tinted Glass,Power Sliding Rear Window w/Rear Defogger,Variably intermittent wipers,3.23 Rear Axle Ratio,CarBravo Certified: When you choose a certified used vehicle less than 10 model years old and 100,0