Used 2021 GMC Sierra for sale in Port Lavaca

Seller description

The 2021 GMC Sierra 1500 SLT in Onyx Black with Jet Black interior delivers premium full-size truck comfort, smooth diesel-style torque, and practical 4WD capability for drivers who want more than just a plain work truck. Powered by a 3.0L I6 engine and paired with a 10-speed automatic transmission, this Sierra SLT offers confident towing and hauling ability, composed highway manners, and the kind of upscale everyday drivability that makes it feel equally at home on the ranch, the road, or the jobsite. With 90,275 miles, this Crew Cab still brings strong value, broad buyer appeal, and premium truck utility in a package that knows how to work without feeling stripped down. Entertainment and Connectivity Features Large touchscreen infotainment display Apple CarPlay integration Android Auto integration Bluetooth hands-free connectivity USB charging and media ports Steering wheel mounted audio and phone controls Voice recognition capability Wi-Fi hotspot capability Navigation capability Digital driver information display Added Features SLT trim package Onyx Black exterior Jet Black interior Four-wheel drive capability 3.0L I6 performance Crew Cab configuration Premium interior appointments Strong towing and hauling appeal Broad personal-use and work-truck versatility Clean upscale GMC styling Safety Features Automatic Emergency Braking Forward Collision Alert Lane Keep Assist with Lane Departure Warning Following Distance Indicator HD rear vision camera Electronic Stability Control Anti-lock braking system Tire pressure monitoring system Advanced airbag system Teen Driver capability Standard Features LED headlamps and LED daytime running lights Premium alloy wheels Dual-zone automatic climate control Power windows and door locks Push-button start capability Spacious Crew Cab interior Fold-up rear seating for added interior flexibility Tilt and telescoping steering wheel Rear seat air vents SLT-specific upscale styling accents Mechanical Features 3.0L I6 engine 10-speed automatic transmission Four-wheel drive Heavy-duty suspension capability Four-wheel disc brakes Electric power steering Strong towing and hauling performance Smooth power delivery for daily driving and heavy use Built for work, travel, and everyday truck use Proven full-size truck practicality Why drivers choose Port Lavaca Auto Group for their next vehicle Trusted dealership serving Texas drivers with transparent, pressure-free buying experiences Large selection of quality SUVs, trucks, and cars ready for immediate delivery Knowledgeable product specialists who help match drivers with the right vehicle Flexible financing options for a wide range of buyers Ongoing customer support and service after the sale Strong reputation backed by consistent five-star Google reviews Customer Review Highlight We shopped around quite a bit before buying, and Port Lavaca Auto Group stood out right away. They were professional, easy to talk to, and made sure everything was clear from start to finish. Heather W., March 2026 From its practical 4WD capability and premium SLT trim to its roomy Crew Cab comfort and strong everyday truck utility, the 2021 GMC Sierra 1500 is built for drivers who want full-size truck strength, upscale comfort, and value in a pickup that still knows how to earn its keep.Preferred Equipment Group 4SA,SLT Convenience Package,Texas Edition SLT Premium Package,Trailering Package,X31 Off-Road & Protection Package,X31 Off-Road Package,6 Speakers,6-Speaker Audio System Feature,AM/FM radio: SiriusXM with 360L,Premium audio system: GMC Infotainment System,Radio data system,Radio: Premium GMC Infotainment Sys w/Multi-Touch,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,Heavy Duty Suspension,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,Brake assist,Electronic Stability Control,Hill Descent Control,Delay-off headlights,Front fog lights,Fully automatic headlights,Dual Exhaust w/Premium Tips,Panic alarm,Security system,Theft Deterrent System (Unauthorized Entry),Speed control,170 Amp Alternator,220 Amp Alternator,Auxiliary External Transmission Oil Cooler,Engine Block Heater,Heavy-Duty Air Filter,Auto-dimming door mirrors,Bumpers: chrome,Chrome Grille,Chrome Wheel To Wheel Assist Steps,Front License Plate Kit,Heated door mirrors,LED Cargo Area Lighting,Power door mirrors,ProGrade Trailering System,Rear step bumper,Rear Wheelhouse Liners,Spray-On Pickup Bed Liner w/GMC Logo,Texas Edition Badging,X31 Hard Badge,2 USB Ports,2 USB Ports (1st Row),4G LTE Wi-Fi Hotspot Capable,All-Weather Floor Liner (LPO),Apple CarPlay/Android Auto,Auto-dimming Rear-View mirror,Color-Keyed Carpeting Floor Covering,Compass,Driver door bin,Driver vanity mirror,Floor-Mounted Center Console,Front reading lights,GMC Connected Access Capable,Heated steering wheel,Illuminated entry,OnStar & GMC Connected Services Capable,Outside temperature display,Overhead console,Passenger vanity mirror,Rear Dual USB Charging-Only Ports,Rear reading lights,Rear seat center armrest,Tachometer,Telescoping steering wheel,Tilt steering wheel,Trip computer,Voltmeter,10-Way Power Driver Seat Adjuster w/Lumbar,10-Way Power Passenger Seat Adjuster w/Lumbar,Front 40/20/40 Split-Bench Seat,Front Bucket Seats,Heated 2nd Row Outboard Seats,Heated Driver & Front Outboard Passenger Seating,Heated front seats,Perf Leather-Appointed Front Outboard Seat Trim,Power passenger seat,Split folding rear seat,Ventilated Driver & Front Passenger Seats,Front Center Armrest w/Storage,Passenger door bin,Front Frame-Mounted Black Recovery Hooks,Hitch Guidance,Hitch Guidance w/Hitch View,In-Vehicle Trailering App,Integrated Trailer Brake Controller,20" x 9" Polished Aluminum Wheels,Alloy wheels,Wheels: 18" x 8.5" 6-Spoke Machined Aluminum,Deep-Tinted Glass,Power Sliding Rear Window w/Rear Defogger,Variably intermittent wipers,3.23 Rear Axle Ratio