Reduced by $14,665 since Jul 12, 2026

2021 GMC Sierra 2500HD SLT



  • $2,002 SAVINGS
    $44,792 BEST PRICE

  • Retail Price: $45,995
  • Haley Discount: -$2,002
  • Haley Price: $43,993
  • Processing fee +$799
  • Selling Price $44,792

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Vehicle Information

VIN: 1GT49NE76MF314121
Stock #: F317850A
Model Code: TK20943
  • Body Style 4D Crew Cab
  • Exterior Color Quicksilver Metallic
  • Interior Color Dark Walnut/Slate
  • Mileage 91,399
  • Engine 8 Cyl - 6.6 L
  • Transmission 6-Speed Automatic
  • Fuel Type Gasoline

Highlighted Features

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

Dealer Comments

This 2021 GMC Sierra 2500HD SLT in silver delivers the capability and refinement you need for work and life's adventures. With its robust 6.6L V8 engine paired with a 6-speed automatic transmission and 4WD, this truck is engineered to handle demanding tasks while providing the control and confidence you deserve.

- 6 Rectangular Chromed Tubular Assist Steps
- Spray-On Pickup Box Bed Liner with GMC Logo
- X31 Off-Road Package with Hill Descent Control and skid plates
- SLT Convenience Package with ventilated front bucket seats and rear heated seats
- Off-Road Suspension with Twin-tube Rancho shocks
- 20 Machined Aluminum Wheels with bright silver accents
- Heated and ventilated front seats with 10-way power adjusters
- Universal Home Remote
- Premium GMC Infotainment System with SiriusXM 360L
- Apple CarPlay and Android Auto compatibility
- Integrated Trailer Brake Controller with In-Vehicle Trailering System App
- Auto-dimming rear-view mirror and heated door mirrors
- Front dual zone automatic temperature control
- LED cargo area lighting and smoked amber roof marker lamps
- 4G LTE Wi-Fi Hotspot capable

The SLT Convenience Package elevates your experience with heated and ventilated front bucket seats, a heated steering wheel, and rear heated seats for year-round comfort. The cabin is thoughtfully appointed with performance leather-appointed front outboard seat trim, creating an environment that balances professional capability with premium touches.

This truck is equipped with the X31 Off-Road Package, providing Hill Descent Control, protective skid plates, and an off-road-tuned suspension system that inspires confidence on any terrain. The 2-speed active transfer case and 3.73 rear axle ratio give you the flexibility to adapt to various conditions. Integrated Trailer Brake Controller with the In-Vehicle Trailering System App simplifies towing operations, keeping you connected and in control.

Technology integration keeps you connected and informed with the Premium GMC Infotainment System featuring SiriusXM 360L, Apple CarPlay, and Android Auto compatibility. The 4.2 color driver information center provides essential data at a glance, while multiple USB ports throughout the cabin ensure your devices stay charged during long drives.

Safety is comprehensive with dual front impact airbags, dual front side impact airbags, overhead airbags, and electronic stability control. The truck features four-wheel disc brakes with ABS, traction control, and a low tire pressure warning system to keep you protected on every journey.

The exterior reflects quality and attention to detail with chrome surround grille, chrome bumpers, LED cargo area lighting, and that commanding front-end presence that commands respect on the road. The 20 machined aluminum wheels with bright silver accents complement the silver exterior finish beautifully.

This 2021 Sierra 2500HD SLT represents a well-equipped work truck that refuses to compromise on comfort, technology, or capability. Schedule your visit today to experience its commanding presence and refined utility firsthand.

Eligible Benefits

All Features

  • Trailering Package includes trailer hitch, 7-pin and 4-pin connectors and (CTT) Hitch Guidance (Deleted when (ZW9) pickup bed delete is ordered.)
  • ProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (U1D) In-vehicle Trailering App (No longer available on Double Cab models.)
  • Pickup bed includes bed assist step (Deleted when (ZW9) pickup bed delete is ordered.)
  • 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 ONLY when (PTT) trailer tire pressure monitor system is factory ordered and sensors are installed. With (ZW9) pickup bed delete no provision for a trailer tire pressure monitor system will exist but all the other (U1D) features will remain.)
  • 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 (Included with (RFX) X31 Off-Road and Protection Package.)
  • Tire, spare LT275/70R18 all-terrain, blackwall (Included and only available with (QF6) LT275/70R18E all-terrain, blackwall tires or (QF9) LT275/65R20 all-terrain, blackwall tires with (E63) pickup bed models. Available to order when (ZW9) pickup bed delete and (QF6) LT275/70R18E all-terrain, blackwall tires are ordered.)
  • Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door (Deleted with (ZW9) pickup bed delete.)
  • Bumper, front chrome lower
  • Bumper, rear chrome with bumper CornerSteps
  • CornerStep, rear bumper
  • Bed Step, Black integrated on forward portion of bed on driver and passenger side (Not available on (ZW9) pickup bed delete.)
  • Cargo tie downs (12), fixed rated at 500 lbs per corner
  • Wheelhouse liners, rear (Not available with (ZW9) pickup bed delete.)
  • Moldings, beltline, stainless steel
  • Grille (Chrome surround with high gloss Black mesh and Chrome inserts.)
  • Headlamps, LED reflector (high intensity) with LED turn signals and LED signature Daytime Running Lamps
  • 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 (Deleted with (ZW9) pickup bed delete.)
  • Taillamps, LED signature taillight with LED stop and reverse light
  • Mirrors, outside power-adjustable vertical trailering with heated and auto-dimming upper glass, (driver and passenger) lower convex mirrors, turn signal indicators, puddle lamps, perimeter lighting, auxiliary lighting, power folding/extending (extends 3.31" [84.25mm])
  • Mirror caps, chrome
  • Glass, deep-tinted
  • Door handles, chrome
  • Tailgate, GMC MultiPro Tailgate with six functional load/access features (Deleted with (ZW9) pickup bed delete.)
  • Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light (Deleted with (ZW9) pickup bed delete.)
  • Tailgate and bed rail protection caps, top (Deleted with (ZW9) pickup bed delete.)
  • Audio system, Premium GMC Infotainment System with 8" diagonal color touch-screen includes 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, advanced voice recognition, in-vehicle apps, personalized profiles for infotainment and vehicle settings (Includes (PZ8) Hitch Guidance with hitch view.)
  • Radio, HD
  • SiriusXM Radio
  • SiriusXM Radio with 360L Equipped with SiriusXM with 360L. Enjoy a trial subscription of the All Access package for the full 360L experience, with a greater variety of SiriusXM content, a more personalized experience and easier navigation. With the All Access package, you can also enjoy your favorites everywhere you go, with the SiriusXM app, online and at home on compatible connected devices. (IMPORTANT: The SiriusXM radio trial package is not provided on vehicles that are ordered for Fleet Daily Rental ("FDR") use. If you decide to continue service after your trial, the subscription plan you choose will automatically renew thereafter and you will be charged according to your chosen payment method at then-current rates. Fees and taxes apply. See the SiriusXM Customer Agreement at www.siriusxm.com for complete terms and how to cancel. All fees, content, features, and availability are subject to change. GM connected vehicle services vary by vehicle model and require active service plan, working electrical system, cell reception and GPS signal. See onstar.com for details and limitations.)
  • Audio system feature, 6-speaker system
  • Bluetooth® for phone, connectivity to vehicle infotainment system
  • Wireless Phone Projection for Apple Carplay and Android Auto
  • 4G LTE 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 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
  • Seat, Up-level Rear with Storage Package, 60/40 folding bench for Crew Cab models, 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)
  • 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, leather-wrapped
  • Steering wheel, heated
  • Steering wheel audio controls
  • Steering column, manual Tilt-Wheel and telescoping
  • Steering column, lock control, electrical
  • Driver Information Center, 4.2" diagonal color display includes driver personalization
  • Exterior Temperature Display, located in radio display
  • Compass, located in instrument cluster
  • Rear Seat Reminder
  • 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
  • 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 (Instrument Panel with bench seat), 2 also includes 1 SD card reader (first row) With bucket seats, the USB ports move to the inside console and also includes auxiliary jack. (Bucket seats require (PCY) SLT Convenience Package.)
  • Power outlet, front auxiliary, 12-volt
  • Power outlet, rear auxiliary, 12-volt
  • USB ports, dual, charge-only (2nd row)
  • Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet) (Deleted with (ZW9) pickup box delete.)
  • Air conditioning, dual-zone automatic climate control
  • Air vents, rear
  • Defogger, rear-window electric
  • Mirror, inside rearview auto-dimming
  • Assist handles front A-pillar mounted for driver and passenger, rear B-pillar mounted
  • GMC Connected Access capable (Subject to terms. See onstar.com or dealer for details)
  • 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
  • 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 and GMC connected services capable (Terms and limitations apply. See onstar.com or dealer for details.)
  • HD Rear Vision Camera (Deleted with (ZW9) pickup bed delete. Not available with (CMT) Gooseneck / 5th Wheel Prep Package.)
  • Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching (Deleted with (ZW9) pickup bed delete.)
  • Hitch Guidance with Hitch View with image adjustment, Pan/Zoom/Tilt (Deleted with (ZW9) pickup bed delete.)
  • 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 with 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 (Not available on (ZW9) pickup bed delete.)

ENGINE, 6.6L V8

  • with Direct Injection and Variable Valve Timing
  • gasoline
  • (401 hp [299 kW] @ 5200 rpm
  • 464 lb-ft of torque [629 N-m] @ 4000 rpm) (STD)

  • Preferred Equipment Group 4SA
  • SLT Convenience Package
  • Suspension Package
  • X31 Off-Road Package
  • 6 Speakers
  • 6-Speaker Audio System Feature
  • AM/FM radio: SiriusXM with 360L
  • HD Radio
  • Premium audio system: Premium GMC Infotainment System
  • Radio: AM/FM w/Premium GMC Infotainment System
  • 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 steering
  • Power windows
  • Power Windows w/Driver Express Up/Down
  • Remote keyless entry
  • Remote Vehicle Starter System
  • Steering wheel mounted audio controls
  • Universal Home Remote
  • 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
  • Electrical Lock Control Steering Column
  • Front anti-roll bar
  • Front wheel independent suspension
  • Keyless Open & Start
  • Low tire pressure warning
  • Occupant sensing airbag
  • Overhead airbag
  • Power Door Locks
  • Pickup Box
  • Brake assist
  • Electronic Stability Control
  • Hill Descent Control
  • Delay-off headlights
  • Front fog lights
  • Fully automatic headlights
  • Panic alarm
  • Security system
  • Unauthorized Entry Theft-Deterrent System
  • Speed control
  • 2-Speed Active Transfer Case
  • Heavy-Duty 80 Amp Battery
  • 6" Rectangular Chromed Tubular Assist Steps
  • Auto-dimming door mirrors
  • Bumpers: chrome
  • Chrome Surround Grille w/High Gloss Black Mesh
  • Front License Plate Kit
  • Heated door mirrors
  • LED Cargo Area Lighting
  • LED Smoked Amber Roof Marker Lamps
  • Power door mirrors
  • Rear step bumper
  • Rear Wheelhouse Liners
  • Spray-On Pickup Box Bed Liner w/GMC Logo
  • Turn signal indicator mirrors
  • 2 USB Ports
  • 2 USB Ports (1st Row)
  • 2nd Row Dual USB Charge-Only Ports
  • 4.2" Diagonal Color Display Driver Info Center
  • 4G LTE Wi-Fi Hotspot Capable
  • Apple CarPlay/Android Auto
  • Auto-dimming Rear-View mirror
  • Compass
  • Compass Located In Instrument Cluster
  • Driver door bin
  • Driver vanity mirror
  • Floor-Mounted Center Console
  • Front 40/20/40 Split-Bench Seats w/Lockable Storage
  • 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 reading lights
  • Rear seat center armrest
  • Tachometer
  • Telescoping steering wheel
  • Tilt steering wheel
  • Trip computer
  • Voltmeter
  • Wireless Phone Projection
  • 10-Way Power Driver Seat Adjuster w/Lumbar
  • 10-Way Power Passenger Seat Adjuster w/Lumbar
  • Front Bucket Seats
  • Heated & Ventilated Front Bucket Seats
  • Heated 2nd Row Outboard Seats
  • Heated Driver & Front Outboard Passenger Seats
  • Heated front seats
  • Perf Leather-Appointed Front Outboard Seat Trim
  • Power passenger seat
  • Split folding rear seat
  • Front Center Armrest w/Storage
  • Passenger door bin
  • Hitch Guidance w/Hitch View
  • In-Vehicle Trailering System App
  • Integrated Trailer Brake Controller
  • 18" Machined Aluminum Wheels
  • 20" Machined Aluminum Wheels
  • Alloy wheels
  • Deep-Tinted Glass
  • Power Front Passenger Windows w/Express Up/Down
  • Power Rear Windows w/Express Down
  • Power Sliding Rear Window w/Defogger
  • Variably intermittent wipers
  • 3.73 Rear Axle Ratio
  • 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): 5200
    • Gross Axle Wt Rating - Rear (lbs): 6600
    • Curb Weight - Front (lbs): 3919
    • Curb Weight - Rear (lbs): 2822
    • Gross Vehicle Weight Rating Cap (lbs): 10850
    • Gross Combined Wt Rating (lbs): 24000
  • Trailering
    • Dead Weight Hitch - Max Trailer Wt. (lbs): 5000
    • Dead Weight Hitch - Max Tongue Wt. (lbs): 500
    • Wt Distributing Hitch - Max Trailer Wt. (lbs): 14500
    • Wt Distributing Hitch - Max Tongue Wt. (lbs): 1450
    • Fifth Wheel Hitch - Max Trailer Wt. (lbs): - TBD -
    • Fifth Wheel Hitch - Max Tongue Wt. (lbs): - TBD -
    • Maximum Trailering Capacity (lbs): 18500
  • Suspension
    • Suspension Type - Front (Cont.): w/Torsion Bar
    • Suspension Type - Rear (Cont.): 3-Stage Leaf
    • 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: 3.73
    • Axle Ratio (:1) - Rear: 3.73
    • Shock Absorber Diameter - Front (mm): 51
    • Shock Absorber Diameter - Rear (mm): 51
    • 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: QF6
    • Rear Tire Order Code: QF6
    • Spare Tire Order Code: ZYG
    • Front Tire Size: LT275/70R18E
    • 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): 18 x - TBD -
    • Rear Wheel Size (in): 18 x - TBD -
    • Spare 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): 57.0
    • 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): 172
    • Length, Overall (in): 266.09
    • Width, Max w/o mirrors (in): 81.85
    • Height, Overall (in): 79.65
    • Overhang, Front (in): - TBD -
    • Overhang, Rear w/o bumper (in): - TBD -
    • Front Bumper to Back of Cab (in): - TBD -
    • Cab to Axle (in): 55.2
    • 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): 10.08
    • Ground Clearance, Rear (in): 10.08
  • Cargo Area Dimensions
    • Cargo Box Length @ Floor (in): 98.27
    • Cargo Box Width @ Top, Rear (in): - TBD -
    • Cargo Box Width @ Floor (in): 71.4
    • Cargo Box Width @ Wheelhousings (in): 50.55
    • Cargo Box (Area) Height (in): 21
    • Tailgate Width (in): - TBD -
    • Cargo Volume (ft³): 83.5
    • 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
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All prices exclude taxes, title, $799 dealer processing fee and $319 theft protection etch. Prices are subject to change without notice. The dealer reserves the right to correct any errors or omissions. Offers, specials and discounts are vin specific. Although every reasonable effort has been made to ensure the accuracy of the information contained on this site, absolute accuracy cannot be guaranteed.

The Manufacturer's Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.