Courtesy Value Pre-Owned Breaux Bridge

Reduced by $500 since Feb 06, 2026

2026 GMC Sierra SLT



Available For Sale
  • $500 SAVINGS
    $84,965 FINAL PRICE

  • MSRP: $85,465
    • -$500
  • Final Price $84,965
    • Add. Available GMC Incentives:
    • -$500

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Vehicle Information

VIN: 1GT4UNEY7TF214146
Stock #: 26GB4717
Model Code: TK20743
  • Body Style Crew Cab
  • Exterior Color Volcanic Red Tintcoat
  • Interior Color Dark Walnut/Slate
  • Engine 8 Cyl - 8 L
  • Transmission 10-speed automatic / 4WD
  • Fuel Type Diesel

Highlighted Features

Feature availability subject to final vehicle configuration. Please reference window sticker for more info.

Dealer Comments

Vehicle Details
Discover the 2026 GMC Sierra 2500 SLT 4WD with the powerful 6.6L V8 Duramax diesel—now available in Breaux Bridge, LA. This heavy-duty GMC Sierra pairs exceptional towing capability and Gallon-crunching diesel efficiency with premium comfort and advanced safety features, making it an ideal choice for work, recreation, and daily driving. You'll find the upscale SLT trim delivers refined interior appointments, intuitive technology, and rugged capability in one package. Standard connectivity includes Apple CarPlay and Android Auto for seamless smartphone integration, plus Hands-Free Bluetooth® for convenient calling and streaming. Driver-assist features such as Lane Departure Warning enhance highway confidence, while a Heated Steering Wheel keeps you comfortable in cooler weather. The 4WD system and stout 6.6L V8 diesel provide towing muscle, reliable performance, and confident traction across varied terrain. This GMC Sierra 2500 SLT is competitively priced and claims the best price in the market—an outstanding value for buyers seeking diesel power and premium features. Located in Breaux Bridge, LA, the vehicle is ready for local test drives and immediate delivery. Contact us today to schedule a viewing, explore financing options, or request a vehicle history report. Experience the blend of capability, comfort, and cutting-edge tech that defines the 2026 GMC Sierra 2500 SLT 4WD.

Equipment
The GMC Sierra's Lane Departure Warning keeps you safe by alerting you when you drift from your lane. This 2026 GMC Sierra 2500 has automated speed control that adjusts to maintain a safe following distance, enhancing highway driving convenience. The leather seats in this vehicle are a must for buyers looking for comfort, durability, and style. Protect it from unwanted accidents with a cutting edge backup camera system. The vehicle offers Android Auto for seamless smartphone integration. This unit features a hands-free Bluetooth® phone system. Apple CarPlay: Seamless smartphone integration for this model - stay connected and entertained on the go! Keep your hands warm all winter with a heated steering wheel in the GMC Sierra . This vehicle keeps you comfortable with Auto Climate. An off-road package is equipped on this vehicle. Never get into a cold vehicle again with the remote start feature on this vehicle. Greater towing safety becomes standard with the installed trailer brake.

All Features

  • Sierra HD Pro Safety includes (UEU) Forward Collision Alert, (UE4) Following Distance Indicator, (UKJ) Front Pedestrian Braking, (TQ5) IntelliBeam, (UFL) Lane Departure Warning, (T8Z) Buckle to Drive and (UHY) Automatic Emergency Braking
  • Trailering Package includes trailer hitch, 7-pin and 4-pin connectors and (CTT) Hitch Guidance
  • ProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (UET) In-vehicle Trailering App
  • Pickup bed includes bed assist step
  • Push Button Start
  • Transfer case, two-speed active, electronic Autotrac with push button control (Requires 4WD models.)
  • Auto-locking rear differential
  • Four wheel drive
  • Air filter, heavy-duty
  • Air filtration monitoring
  • Trailer brake controller, integrated
  • In-Vehicle Trailering App, System includes checklist, trailer maintenance reminders, trailer security alerts, trailer mileage, tow/haul reminder, trailer electrical diagnostics and Trailer Tire Pressure Monitor System module (Includes trailer tire pressure monitoring alert when (PTT) trailer tire pressure monitor sensors are installed.)
  • Recovery hooks, front, frame-mounted, Black
  • Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
  • Suspension Package (Not available with (X31) Off-Road Package.)
  • Steering, Digital Variable Steering Assist this system automatically adjusts steering based on speed, road conditions, and other inputs to reduce driver effort and fatigue
  • Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
  • Brake lining wear indicator
  • Wheels, 18" (45.7 cm) machined aluminum wheel with Dark Grey metallic accents
  • Tires, LT275/70R18E all-terrain, blackwall
  • Tire, spare LT275/70R18 all-terrain, blackwall
  • Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
  • Bumper, front chrome lower
  • Bumper, rear chrome with bumper CornerSteps
  • Bed Step, Black integrated on forward portion of bed on driver and passenger side
  • CornerStep, rear bumper
  • Cargo tie downs (12), fixed, rated at 500 lbs per corner
  • Wheelhouse liners, rear
  • Moldings, beltline, chrome
  • Grille (Chrome surround with Chrome insert bars.)
  • Headlamps, Animated LED projectors LED turn signals and Daytime Running Lamps
  • IntelliBeam, automatic high beam on/off (Included and only available with (PDI) Sierra HD Pro Safety.)
  • Fog lamps, LED
  • Lamps, cargo area cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel
  • LED Cargo Area Lighting located in cargo bed activated with switch on center switch bank or key fob
  • Taillamps, Animated LED Signature Tail, Stop, turn and Reverse lamps
  • Mirrors, outside power-adjustable vertical trailering with heated and auto-dimming upper glass, (driver and passenger), lower convex mirrors, turn signal indicators, puddle lamps, (U12) perimeter lighting, auxiliary lighting, power folding/extending (extends 3.31" [84.25mm]) lighting
  • Mirror caps, chrome
  • Glass, deep-tinted
  • Wipers, front rain-sensing
  • Door handles, chrome
  • Tailgate, standard
  • Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light
  • Tailgate and bed rail protection caps, top
  • Audio System, 13.4" diagonal Premium GMC Infotainment System with Google built in apps such as navigation and voice assistance includes color touch-screen, multi-touch display, AM/FM stereo, Bluetooth® streaming audio for music and most phones; featuring wireless Android Auto and Apple CarPlay capability for compatible phones
  • SiriusXM Trial Subscription
  • SiriusXM with 360L Trial Subscription. SiriusXM with 360L transforms your customers' ride with our most extensive and personalized radio experience on the road. (IMPORTANT: The SiriusXM trial subscription is not provided on vehicles that are ordered for Fleet Daily Rental ("FDR") use. Trial subscription is subject to the SiriusXM Customer Agreement and privacy policy, visit siriusxm.com which includes full terms and how to cancel. All fees, content, features, and availability are subject to change. Some features require GM connected vehicle services.)
  • Audio system feature, 6-speaker system
  • Bluetooth® for phone connectivity to vehicle infotainment system
  • Wireless phone projection for Apple CarPlay and Android Auto
  • Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)
  • Seats, front 40/20/40 split-bench with covered armrest storage and under-seat storage (lockable) (Not available with (PCY) SLT Convenience Package, (PDB) SLT Premium Package or (PDC) Texas Edition SLT Premium Package.)
  • Seat trim, Perforated Leather-appointed front outboard seating positions
  • Seat, Up-level Rear with Storage Package 60/40 folding bench, includes full-length bench seat, seatback storage on left and right side, center fold out armrest with 2 cupholders, full cab width under-seat storage, (includes child seat top tether anchor)
  • Seat adjuster, driver 10-way power including lumbar
  • Seat adjuster, passenger 10-way power including lumbar
  • Seating, heated driver and front outboard passenger
  • Driver memory recalls driver "presets" for power driver seat and outside mirrors
  • Floor covering, color-keyed carpeting
  • Floor mats, carpeted front (Deleted when LPO floor liners are ordered or (BKF) Premium Floor Liners are ordered.)
  • Floor mats, carpeted rear (Deleted when LPO floor liners are ordered or (BKF) Premium Floor Liners are ordered.)
  • Steering wheel, wrapped
  • Steering wheel, heated
  • Steering wheel audio controls
  • Steering column, manual Tilt-Wheel and telescoping
  • Driver Information Center, enhanced, 12.3" diagonal reconfigurable multicolor digital display
  • Rear Seat Reminder
  • GMC Premium information Display- 13.4" diagonal Multicolor touch screen
  • Exterior Temperature Display, located in radio display
  • Compass, located in instrument cluster
  • Windows, power front, drivers express up/down
  • Window, power front, passenger express up/down
  • Windows, power rear, express down
  • Door locks, power
  • Keyless Open and Start includes remote keyless entry
  • Remote vehicle starter system
  • Cruise control, steering wheel-mounted
  • Theft-deterrent system, unauthorized entry
  • Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
  • USB Ports, 2, Charge/Data ports located on instrument panel
  • USB ports, (2) charge-only, rear
  • Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
  • Air vents, rear
  • Air conditioning, dual-zone automatic climate control
  • Defogger, rear-window electric
  • Mirror, inside rearview auto-dimming
  • Assist handles front A-pillar mounted for driver and passenger, rear B-pillar mounted
  • Front Pedestrian Braking (Included and only available with (PDI) Sierra HD Pro Safety.)
  • Automatic Emergency Braking (Included and only available with (PDI) Sierra HD Pro Safety.)
  • StabiliTrak, stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assist
  • Daytime Running Lamps, LED signature lighting
  • LED Signature DRL's
  • Airbags, Dual-stage frontal airbags for driver and front outboard passenger; Seat-mounted side-impact airbags for driver and front outboard passenger; Head-curtain airbags for front and rear outboard seating positions; Includes front outboard Passenger Sensing System for frontal outboard passenger airbag (Always use seat belts and child restraints. Children are safer when properly secured in a rear seat in the appropriate child restraint. See the Owner's Manual for more information.)
  • OnStar Services capable (See onstar.com for details and limitations. Services vary by model. Service plan required.)
  • HD Rear Vision Camera (Removed with (UV2) HD Surround Vision.)
  • Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching
  • Hitch Guidance with Hitch View with image adjustment, Pan/Zoom/Tilt
  • Forward Collision Alert (Included and only available with (PDI) Sierra HD Pro Safety.)
  • Following Distance Indicator (Included and only available with (PDI) Sierra HD Pro Safety.)
  • Lane Departure Warning (Included and only available with (PDI) Sierra HD Pro Safety.)
  • Rear Seat Belt Indicator
  • Seat Belt Adjustable Guide Loops, front row only
  • Buckle to Drive prevents vehicle from being shifted out of Park until driver seat belt is fastened; times out after 20 seconds and encourages seat belt use (Included and only available with (PDI) Sierra HD Pro Safety.)
  • Teen Driver a configurable feature that lets you activate customizable vehicle settings associated with a key fob, to help encourage safe driving behavior. It can limit certain available vehicle features, and it prevents certain safety systems from being turned off. An in-vehicle report card gives you information on driving habits and helps you to continue to coach your new driver
  • Tire Pressure Monitoring System, auto learn includes Tire Fill Alert (does not apply to spare tire)
  • Trailering Information Label provides max trailer ratings for tongue weight, conventional, gooseneck and 5th wheel trailering
  • OnStar Basics (OnStar Fleet Basics for Fleet) Drive confidently with core OnStar services including select remote commands, built-in voice assistance, real-time traffic and navigation, and Automatic Crash Response to help if you're in need. (Requires (UE1) OnStar. OnStar Basics includes select remote commands, Navigation, Voice Assistance, and Automatic Crash Response, for eligible vehicles with compatible software. OnStar Basics is standard for 8 years; OnStar plan, working electrical system, cell reception and GPS signal required. OnStar links to emergency services. Service coverage varies with conditions and location. Service availability, features and functionality vary by device and software version. See onstar.com for details and limitations.)

ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE

  • (470 hp [350.5 kW] @ 2800 rpm
  • 975 lb-ft of torque [1322 Nm] @ 1600 rpm) (Includes (K05) engine block heater.)

SLT PREMIUM PACKAGE

  • includes (PCY) SLT Convenience Package
  • (PDY) SLT Preferred Package
  • (PED) Sierra HD Pro Safety Plus Package
  • (BVQ) 6" rectangular
  • cab length Chrome assist steps
  • and (CGN) spray-on bedliner. No substitutions to the above content.

WHEELS, 20" (50.8 CM) BRIGHT FACE WHEELS

  • with dark painted pockets

LPO, ALL-WEATHER FLOOR LINER, 1ST AND 2ND ROWS

  • (dealer-installed)

LPO, WHEEL LOCKS, SET OF 4

  • (dealer-installed)

LPO, REAR UNDERSEAT STORAGE

  • composite storage bin
  • includes lockable lid
  • (dealer-installed)

X31 OFF-ROAD PACKAGE

  • includes (JHD) Hill Descent Control
  • (NZZ) skid plates
  • Off-Road suspension
  • Twin-tube Rancho shocks and X31 hard badge

  • 50-STATE EMISSIONS
  • VOLCANIC RED TINTCOAT
  • REAR AXLE 3.42 RATIO
  • GVWR; 11;350 LBS. (5148 KG)
  • ENG: DURAMAX 6.6L TURBO-DIES
  • TRANS: 10-SPEED AUTO
  • SLT PREMIUM PACKAGE SLT CONVENIENCE PACKAGE
  • ALL TERRAIN TIRES
  • BRIGHT FACE DARK PAINTED WHEELS 20"
  • ALL-WEATHER FLOOR LINERS (DEALER INSTALLED)
  • CUSTOMER DIALOGUE NETWORK
  • WHEEL LOCKS; SET OF 4 (DEALER INSTALLED)
  • REAR UNDERSEAT STORAGE (DEALE INSTALLED)
  • X31 OFF-ROAD PACKAGE:
  • SLT PREMIUM PACKAGE DISCOUNT DISCOUNT
  • DEALER IMR CONTRIBUTION
  • LMA GROUP CONTRIBUTION
  • Apple CarPlay/Android Auto smart device wireless mirroring
  • Forward Collision Alert with Automatic Braking
  • Front Pedestrian Braking
  • Wi-Fi Hotspot capable mobile hotspot internet access
  • HD Rear Vision Camera w/Hitch View rear mounted camera
  • Adaptive cruise control
  • Automatic Emergency Braking predictive brake assist system
  • Cruise control with steering wheel mounted controls
  • Keyfob remote start
  • Heated steering wheel
  • Heated driver and front passenger seats
  • Leather front seat upholstery
  • Primary monitor touchscreen
  • Lane Departure Warning
  • Driver seat power reclining
  • lumbar support
  • cushion tilt
  • fore/aft control and height adjustable control
  • AutoTrac part and full-time 4WD
  • Duramax 6.6L V-8 diesel direct injection
  • intercooled turbo
  • diesel
  • engine with 470HP
  • Duramax 6.6L V-8
  • Google Built-In built-in virtual assistant
  • Teen Driver restricted driving mode/alerts
  • Keyless Open/Keyless Start with hands-free access and push button start
  • Keyfob window control
  • Smart device remote start
  • Push-button
  • GCW Alert weight capacity alert
  • Stolen Vehicle Assistance vehicle tracker with vehicle slowdown
  • Bluetooth® wireless audio streaming
  • Hitch Guidance with Hitch View vehicle to trailer hitching assist
  • Gauge cluster display size: 12.30
  • Following Distance Indicator
  • Trailer light test
  • Trailer light malfunction warning
  • Trailer theft alarm
  • Dual-zone front climate control
  • Full gauge cluster screen
  • Auto high-beam headlights
  • Immobilizer
  • OnStar vehicle integrated emergency SOS system
  • Bluetooth® handsfree wireless device connectivity
  • Trailer brake controller
  • Trailer sway control
  • Trailering Assist Guidelines vehicle and trailer reverse assist with visual graphic guidance only
  • Premium GMC Infotainment System external memory control
  • Internet radio capability
  • Digital/analog instrumentation display
  • Configurable instrumentation gauges
  • Power extendable trailer mirrors
  • Electronic stability control system with anti-roll
  • Hill start assist
  • Automatic climate control
  • Electrical
    • Cold Cranking Amps @ 0° F (Primary): 720
    • Maximum Alternator Capacity (amps): 170
    • Maximum Alternator Watts: N/A
  • Cooling System
    • Total Cooling System Capacity (qts): - TBD -
  • Weight Information
    • Gross Axle Wt Rating - Front (lbs): - TBD -
    • Gross Axle Wt Rating - Rear (lbs): - TBD -
    • Curb Weight - Front (lbs): 4013
    • Curb Weight - Rear (lbs): 2812
    • Gross Vehicle Weight Rating Cap (lbs): 11350
    • Gross Vehicle Weight Rating Cap (lbs): 10850
    • Gross Combined Wt Rating (lbs): 27500
    • Gross Combined Wt Rating (lbs): 26000
  • Trailering
    • Dead Weight Hitch - Max Trailer Wt. (lbs): 5000
    • Dead Weight Hitch - Max Tongue Wt. (lbs): 500
    • Wt Distributing Hitch - Max Trailer Wt. (lbs): 18500
    • Wt Distributing Hitch - Max Trailer Wt. (lbs): 16000
    • Wt Distributing Hitch - Max Tongue Wt. (lbs): 1850
    • Wt Distributing Hitch - Max Tongue Wt. (lbs): 1600
    • Fifth Wheel Hitch - Max Trailer Wt. (lbs): 19100
    • Fifth Wheel Hitch - Max Trailer Wt. (lbs): 18380
    • Fifth Wheel Hitch - Max Tongue Wt. (lbs): 4775
    • Fifth Wheel Hitch - Max Tongue Wt. (lbs): 4600
    • Maximum Trailering Capacity (lbs): 20000
  • Suspension
    • Suspension Type - Front: Short/Long Arm
    • Suspension Type - Rear: Multi-Leaf Springs
    • Spring Capacity - Front (lbs): - TBD -
    • Spring Capacity - Rear (lbs): - TBD -
    • Axle Type - Front: - TBD -
    • Axle Type - Rear: - TBD -
    • Axle Capacity - Front (lbs): - TBD -
    • Axle Capacity - Rear (lbs): - TBD -
    • Axle Ratio (:1) - Front: 3.42
    • Axle Ratio (:1) - Front: 3.73
    • Axle Ratio (:1) - Rear: 3.42
    • Axle Ratio (:1) - Rear: 3.73
    • Shock Absorber Diameter - Front (mm): 2.01
    • Shock Absorber Diameter - Rear (mm): 2.01
    • Stabilizer Bar Diameter - Front (in): 1.38
  • Brakes
    • Brake Type: Pwr
    • Brake ABS System: 4-Wheel
    • Disc - Front (Yes or ): Yes
    • Disc - Rear (Yes or ): Yes
    • Front Brake Rotor Diam x Thickness (in): 14 x 1.6
    • Rear Brake Rotor Diam x Thickness (in): 14.1 x 1.3
  • Tires
    • Front Tire Order Code: QF9
    • Front Tire Order Code: QF6
    • Rear Tire Order Code: QF9
    • Rear Tire Order Code: QF6
    • Spare Tire Order Code: ZYG
    • Front Tire Size: LT275/65R20
    • Front Tire Size: LT275/70R18E
    • Rear Tire Size: LT275/65R20
    • Rear Tire Size: LT275/70R18E
    • Spare Tire Size: LT275/70R18
    • Front Tire Capacity (lbs): - TBD -
    • Rear Tire Capacity (lbs): - TBD -
    • Spare Tire Capacity (lbs): - TBD -
    • Revolutions/Mile @ 45 mph - Front: N/A
    • Revolutions/Mile @ 45 mph - Rear: N/A
    • Revolutions/Mile @ 45 mph - Spare: N/A
  • Wheels
    • Front Wheel Size (in): 20 x - TBD -
    • Front Wheel Size (in): 18 x - TBD -
    • Rear Wheel Size (in): 20 x - TBD -
    • Rear Wheel Size (in): 18 x - TBD -
    • Front Wheel Material: Aluminum
    • Rear Wheel Material: Aluminum
    • Spare Wheel Material: Steel
  • Steering
    • Steering Type: Pwr Recirculating Ball
    • Steering Ratio (:1), On Center: - TBD -
    • Steering Ratio (:1), At Lock: - TBD -
    • Turning Diameter - Curb to Curb (ft): 52.7
    • Turning Diameter - Wall to Wall (ft): N/A
  • Frame
    • Frame Type: - TBD -
  • Fuel Tank
    • Fuel Tank Capacity, Approx (gal): 36
    • Fuel Tank Location: - TBD -
  • Exterior Dimensions
    • Wheelbase (in): 159
    • Length, Overall (in): 250.75
    • Width, Max w/o mirrors (in): 81.85
    • Height, Overall (in): 79.82
    • Overhang, Front (in): - TBD -
    • Overhang, Rear w/o bumper (in): - TBD -
    • Front Bumper to Back of Cab (in): - TBD -
    • Cab to Axle (in): 42.17
    • Cab to End of Frame (in): - TBD -
    • Ground to Top of Load Floor (in): - TBD -
    • Ground to Top of Frame (in): - TBD -
    • Frame Width, Rear (in): - TBD -
    • Ground Clearance, Front (in): 10.12
    • Ground Clearance, Rear (in): 10.12
  • Cargo Area Dimensions
    • Cargo Box Length @ Floor (in): 82.2
    • Cargo Box Width @ Top, Rear (in): - TBD -
    • Cargo Box Width @ Floor (in): 71.4
    • Cargo Box Width @ Wheelhousings (in): 51.85
    • Cargo Box (Area) Height (in): 21
    • Tailgate Width (in): - TBD -
    • Cargo Volume (ft³): 69.5
    • Ext'd Cab Cargo Volume (ft³): - TBD -
  • Interior Dimensions
    • Passenger Capacity: 6
    • Front Head Room (in): 43.03
    • Front Leg Room (in): 44.53
    • Front Shoulder Room (in): 66.02
    • Front Hip Room (in): 61.18
    • Second Head Room (in): 40.12
    • Second Leg Room (in): 43.4
    • Second Shoulder Room (in): 65.3
    • Second Hip Room (in): 60.24
  • Summary
    • Vehicle Name: GMC Sierra 2500HD
    • Body Style: Crew Cab Pickup
    • Body Code: E63

Warranty

  • Basic Warranty: 36 months / 36,000 miles
  • Drivetrain Warranty: 60 months / 60,000 miles - 3.0L & 6.0L Duramax® Turbo-Diesel engines, and certain commercial, government, and qualified fleet vehicles: 5 years/100,000 miles
  • Rust-Through Corrosion Warranty: 72 months / 100,000 miles
  • Corrosion Warranty: 36 months / 36,000 miles
  • Roadside Assistance Warranty: 60 months / 60,000 miles - 3.0L & 6.0L Duramax® Turbo-Diesel engines, and certain commercial, government, and qualified fleet vehicles: 5 years/100,000 miles
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May not represent actual vehicle. (Options, colors, trim and body style may vary)