The GMC Sierra 1500 is a stylish and well-rounded full-size pickup, combining robust capability and advanced technology with impressive refinement, an assertive design language, and a smooth, comfortable ride. It's also nicely equipped with many desirable amenities. For 2026, the GMC Sierra 1500 carries over mostly unchanged, introducing just a few thoughtful updates. Two new paint options, Glacier White Tricoat and Coastal Dune, replace White Frost Tricoat and Thunderstorm Gray on the available color palette. Additionally, models equipped with the 6.2-liter V8 engine now emit a more aggressive exhaust note in Sport mode.
Whether you need a dependable work truck or a refined daily driver for long commutes to Broussard or Lafayette, the GMC Sierra 1500 has a configuration to suit your needs and lifestyle—and it's available here at Musson Patout GMC in New Iberia. Amenities are organized across eight primary trim levels and several optional packages. Here's a quick look at some standard feature highlights of each tier.
GMC Sierra 1500 Powertrain Options
The 2026 Sierra 1500 has a quartet of engines available on its roster, including:
- 2.7-liter TurboMax™ I-4 (310 horsepower, 430 pound-feet of torque): Standard in Pro, SLE, and Elevation. Max tow rating: 9,500 pounds.
- 5.3-liter V8 (355 horsepower, 383 pound-feet): Standard in SLT and Denali; available in other trims. Max tow rating: 11,200 pounds.
- 6.2-liter V8 (420 horsepower, 460 pound-feet): Standard in Denali Ultimate; available in AT4, AT4X, SLT, and Denali. Max tow rating: 13,000 pounds.
- 3.0-liter Duramax® I6 (305 horsepower, 495 pound-feet): Standard in AT4 and AT4X; available in SLT and Denali. Max tow rating: 13,200 pounds.
Trim Level Highlights
Pro
The Sierra 1500 Pro establishes a solid foundation, providing everyday practicality and rugged durability, as well as a few desirable modern touches. It's ideal for contractors, first-time truck buyers, or anyone who wants professional-grade toughness for the most accessible value proposition.
- LED headlights
- Automatic high beams
- Heated side mirrors
- Easy-to-clean vinyl flooring
- Cloth or vinyl seat upholstery
- 7-inch touchscreen; wireless Apple CarPlay/Android Auto
- Forward Collision Alert, Automatic Emergency Braking
- Front Pedestrian Braking
- Following Distance Indicator
- Lane Departure Warning, Lane Keep Assist
SLE
The SLE trim introduces more comfort amenities and connected tech features. It delivers work-ready capability with upgraded screens, interior materials, and intuitive, driver-focused controls.
- Auto-locking rear differential
- 17-inch alloy wheels
- LED bed lighting
- MultiPro tailgate
- Keyless entry
- 12.3-inch digital instrument cluster
- 13.4-inch touchscreen
- Power-adjustable driver's seat
- Dual-zone automatic climate control
- Heated front seats and steering wheel
- Rear underseat storage
Elevation
The Elevation trim has bolder styling and improved capability, building on SLE with attributes like:
- 20-inch alloy wheels
- Single-speed transfer case (with 4WD)
- Increased towing performance
- LED fog lights
- Cloth upholstery
SLT
Stepping into the SLT trim gives the Sierra 1500 a more premium overall feel, adding nicer materials and thoughtful cabin and seating upgrades. Highlights include:
- 18-inch alloy wheels
- Chrome accents
- Rain-sensing wipers
- Power-folding/auto-dimming mirrors
- Leather upholstery
- Driver memory settings
- Power-adjustable front passenger seat
AT4
Ideal for outdoor enthusiasts in Loreauville and Abbeville, the AT4 is purpose-built for adventure beyond the asphalt. It includes several cabin and tech upgrades, plus specialized off-road-ready equipment.
- Four-wheel drive and two-speed transfer case
- Terrain-tuned suspension with two-inch lift
- All-terrain tires
- Recovery hooks
- Skid plates
- Spray-in bed liner
- Ventilated front seats
- Heated rear seats
- Wireless charging pad
- Rear automatic braking
- HD Surround Vision
- Lane Change Alert with Trailer Side Blind Zone Alert
AT4X
Taking the AT4 concept to the next level, the AT4X trim adds off-road handling enhancements and several premium tech enhancements.
- Off-road adaptive suspension dampers
- Front and rear e-lockers
- Sunroof
- Power-sliding rear window
- Bed-view camera
- Digital rearview mirror
- Head-up display
- Adaptive cruise control
- Front/rear parking sensors
Denali
GMC's flagship trim level, Denali, moves the Sierra 1500 into luxury territory, building with performance upgrades and deluxe amenities, including:
- 20-inch wheels
- Two-speed transfer case (4WD models)
- Adaptive suspension
- Integrated trailer brake controller
- Spray-in bed liner
- Power-retractable steps
- Bed-view camera
- Power-sliding rear window
- Power-adjustable steering column
- Ventilated front seats
- Heated rear seats
- Wireless charging pad
- 7-speaker Bose audio system
- Digital rearview mirror
- Adaptive cruise control
- Front/rear parking sensors
- Available Super Cruise
Denali Ultimate
The top-tier Denali Ultimate trim adds the final luxe touches for discerning St. Martinville shoppers seeking the most feature-rich Sierra 1500 experience.
- 22-inch wheels
- Carbon-fiber composite bed
- Sunroof
- Head-up display
- 12-speaker Bose audio system
- Available Super Cruise
Test-Drive a New 2026 GMC Sierra 1500 in New Iberia
Reach out to Musson Patout GMC for more information about the GMC Sierra 1500, including available trims and options, financing offers, and reservation opportunities. If you'd like to check out the accommodations and features firsthand, we invite you to visit us for a test drive.