2021 GMC Sierra 2500HD AT4



Available For Sale
  • $52,995 INTERNET PRICE


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Vehicle Information

VIN: 1GT19PEY8MF124022
Stock #: P3429
Model Code: TK20743
  • Body Style Crew Cab Chassis Cab
  • Exterior Color Summit White
  • Interior Color Jet Black W/Kalahari Accents
  • Mileage 75,972
  • Engine 8 Cyl - 6.6 L
  • Transmission 10-speed automatic
  • Fuel Type Diesel

Highlighted Features

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

Dealer Comments

Vehicle Details
Take on tough jobs and weekend adventures in this pre-owned 2021 GMC Sierra 2500 AT4 4WD, now available in Loveland, CO. Powered by a V8, 6.6L Diesel engine, this heavy-duty pickup delivers the strength, confidence, and capability you want for towing, hauling, and off-road driving. The AT4 trim adds rugged style and premium comfort, making it a standout choice for work and play. Equipped with the Off-Road Package, this GMC Sierra 2500 AT4 is ready for dirt roads, job sites, and mountain trails around Northern Colorado. Inside, enjoy a Heated Steering Wheel, Automatic Climate Control, and Steering Wheel Audio Controls for a more convenient drive in every season. Remote Start adds extra comfort and convenience before you even climb in. If you need a dependable pre-owned GMC Sierra 2500HD with serious capability and refined features, this 2021 model deserves a close look. Visit us in Loveland, CO to experience the bold design, advanced features, and hard-working performance of this GMC Sierra 2500 AT4 4WD today. Whether you are shopping for a heavy-duty diesel truck, a capable 4x4 pickup, or a premium off-road hauler, this GMC Sierra 2500 AT4 checks every box. Schedule your test drive and see why drivers in Loveland, Fort Collins, and Northern Colorado trust GMC durability every single day.

Equipment
This unit offers Automatic Climate Control for personalized comfort. This model is pure luxury with a heated steering wheel. Apple CarPlay: Seamless smartphone integration for this model - stay connected and entertained on the go! The GMC Sierra features a hands-free Bluetooth® phone system. Start it from inside with remote start. This GMC Sierra has a clean CARFAX vehicle history report. The steering wheel audio controls on the GMC Sierra keep the volume and station within easy reach. This 3/4 ton pickup comes equipped with Android Auto for seamless smartphone integration on the road. An off-road package is equipped on this 2021 GMC Sierra 2500. Protect this 2021 GMC Sierra 2500 from unwanted accidents with a cutting edge backup camera system. The leather seats in this unit are a must for buyers looking for comfort, durability, and style. Keep safely connected while in this unit with OnStar. You may enjoy services like Automatic Crash Response, Navigation, Roadside Assistance and Hands-Free Calling.

Packages
Preferred Equipment Group 4SB: HD Rear Vision Camera; LED Cargo Area Lighting; Remote Vehicle Starter System; 2 USB Ports (1st Row); Electric Rear-Window Defogger; Wireless Phone Projection; Floor-Mounted Center Console; Unauthorized Entry Theft-Deterrent System; Painted Black Surround Grille; Compass Located in Instrument Cluster; 4.2" Diagonal Color Display Driver Info Center; Electrical Lock Control Steering Column; 120-Volt Instrument Panel Power Outlet; Heated Driver and Front Outboard Passenger Seats; X31 Off-Road Package; Front Premium Floor Liners with Removable Carpet Insert; Steering Wheel Audio Controls; Rear Premium Floor Liners with Removable Carpet Insert; OnStar and GMC Connected Services Capable; 120-Volt Bed Mounted Power Outlet; Heated 2nd Row Outboard Seats; Power Front Passenger Windows with Express Up/down; 2-Speed Active Transfer Case; Deep-Tinted Glass; Spray-On Pickup Box Bed Liner with AT4 Logo; AM/FM Stereo with Premium GMC Infotainment System; Power Rear Windows with Express Down; Red Recovery Hooks; Integrated Trailer Brake Controller; Power Windows with Driver Express Up/down; Heated and Ventilated Front Bucket Seats; Manual Tilt-Wheel/telescoping Steering Column; 2nd Row Dual USB Charge-Only Ports; Keyless Open and Start; ProGrade Trailering System; Rear Wheelhouse Liners; 12-Volt Rear Auxiliary Power Outlet; 2 USB Ports; Power Door Locks. **Equipment listed is based on original vehicle build and subject to change. Please confirm the accuracy of the included equipment by calling the dealer prior to purchase.**

All Features

  • X31 Off-Road Package includes (JHD) Hill Descent Control, (NZZ) skid plates, Off-Road suspension and Twin-tube Rancho shocks
  • 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 (U1D) In-vehicle Trailering App
  • Pickup bed includes bed assist step
  • Hill Descent Control
  • Transfer case, two-speed active, electronic Autotrac with push button control
  • 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.)
  • Recovery hooks, Red
  • Skid Plates protect the oil pan, front axle and transfer case
  • Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
  • Suspension, Off-Road includes twin-tube shocks
  • 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, body-color lower
  • Bumper, rear body-color with bumper CornerSteps
  • CornerStep, rear bumper
  • Bed Liner, Spray-on, Pickup bedliner with GMC logo (does not include spray-on liner on tailgate due to Black composite inner panel) (AT4 logo replaces GMC logo. Not available with any Ship Thrus EXCEPT (VSH), (VTV), (TCH) or (TCE).)
  • Bed Step, Black integrated on forward portion of bed on driver and passenger side
  • Cargo tie downs (12), fixed rated at 500 lbs per corner
  • Wheelhouse liners, rear
  • Moldings, beltline, Black
  • Grille (Painted Black surround with high gloss Black mesh and Black 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
  • 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]) (Molded in color Black.)
  • Mirror caps, high gloss Black
  • Glass, deep-tinted
  • Door handles, body-color
  • Tailgate, GMC MultiPro Tailgate with six functional load/access features
  • 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, 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 bucket with center console
  • Seat trim, Perforated leather-appointed front
  • Seat adjuster, driver 10-way power including lumbar
  • Seat adjuster, passenger 10-way power including lumbar
  • Seating, heated driver and front outboard passenger
  • Seats, ventilated driver and front passenger
  • Driver memory recalls driver "presets" for power driver seat and outside mirrors
  • Seats, heated second row outboard seats
  • 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)
  • Center Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability
  • Floor covering, color-keyed carpeting
  • Premium Floor Liners with removable carpet insert, front
  • Premium Floor Liners with removable carpet insert, rear
  • 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, 2 (first row) located on instrument panel
  • USB Ports (Inside Console with bucket seats), 2 also includes 1 SD card reader and auxiliary jack
  • 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)
  • 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
  • Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching
  • Hitch Guidance with Hitch View with image adjustment, Pan/Zoom/Tilt
  • 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

AT4 PREFERRED EQUIPMENT GROUP

  • includes standard equipment

  • Preferred Equipment Group 4SB: HD Rear Vision Camera; LED Cargo Area Lighting; Remote Vehicle Starter System; 2 USB Ports (1st Row); Electric Rear-Window Defogger; Wireless Phone Projection; Floor-Mounted Center Console; Unauthorized Entry Theft-Deterrent System; Painted Black Surround Grille; Compass Located in Instrument Cluster; 4.2" Diagonal Color Display Driver Info Center; Electrical Lock Control Steering Column; 120-Volt Instrument Panel Power Outlet; Heated Driver and Front Outboard Passenger Seats; X31 Off-Road Package; Front Premium Floor Liners with Removable Carpet Insert; Steering Wheel Audio Controls; Rear Premium Floor Liners with Removable Carpet Insert; OnStar and GMC Connected Services Capable; 120-Volt Bed Mounted Power Outlet; Heated 2nd Row Outboard Seats; Power Front Passenger Windows with Express Up/down; 2-Speed Active Transfer Case; Deep-Tinted Glass; Spray-On Pickup Box Bed Liner with AT4 Logo; AM/FM Stereo with Premium GMC Infotainment System; Power Rear Windows with Express Down; Red Recovery Hooks; Integrated Trailer Brake Controller; Power Windows with Driver Express Up/down; Heated and Ventilated Front Bucket Seats; Manual Tilt-Wheel/telescoping Steering Column; 2nd Row Dual USB Charge-Only Ports; Keyless Open and Start; ProGrade Trailering System; Rear Wheelhouse Liners; 12-Volt Rear Auxiliary Power Outlet; 2 USB Ports; Power Door Locks
  • Apple CarPlay/Android Auto smart device wireless mirroring
  • 4G LTE Wi-Fi Hotspot capable mobile hotspot internet access
  • HD Rear Vision Camera w/Hitch View rear mounted camera
  • Brake assist system
  • Cruise control with steering wheel mounted controls
  • Ventilated driver and front passenger seats
  • Keyfob remote start
  • Heated steering wheel
  • Heated driver and front passenger seats
  • Heated rear seats
  • Leather front seat upholstery
  • Primary monitor touchscreen
  • Driver seat power reclining
  • lumbar support
  • cushion tilt
  • fore/aft control and height adjustable control
  • AutoTrac part and full-time 4WD
  • Teen Driver restricted driving mode/alerts
  • Keyless Open/Keyless Start with hands-free access and push button start
  • Keyfob window control
  • Push-button
  • Bluetooth® wireless audio streaming
  • Hitch Guidance vehicle to trailer hitching assist
  • GMC ProGrade Trailering System trailer light test
  • GMC ProGrade Trailering System trailer light malfunction warning
  • GMC ProGrade Trailering System trailer theft alarm
  • Dual-zone front climate control
  • Immobilizer
  • Bluetooth® handsfree wireless device connectivity
  • Trailer brake controller
  • Trailer sway control
  • Trailering Assist Guidelines vehicle and trailer reverse assist with visual graphic guidance only
  • External memory control
  • Internet radio capability
  • 6 USB ports
  • Power extendable trailer mirrors
  • StabiliTrak w/Proactive Roll Avoidance electronic stability control system with anti-roll
  • Hill Descent Control (HDC)
  • Hill start assist
  • Automatic climate control
  • Rear Seat Reminder rear seat check warning
  • 1 exterior 120V AC power outlet
  • LED daytime running lights
  • LED brake lights
  • LED front fog lights
  • Leather and aluminum steering wheel
  • BedStep integrated side steps
  • EZ Lift
  • Easy lower tailgate
  • Integrated tailgate step
  • Trailer hitch light
  • Manual rear child safety door locks
  • Heated driver and passenger side door mirrors
  • 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): 5600
    • Gross Axle Wt Rating - Front (lbs): 4800
    • Gross Axle Wt Rating - Rear (lbs): 6600
    • Curb Weight - Front (lbs): 3854
    • Curb Weight - Rear (lbs): 2788
    • Gross Vehicle Weight Rating Cap (lbs): 10650
    • Gross Combined Wt Rating (lbs): 26000
    • 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): 18500
    • Wt Distributing Hitch - Max Trailer Wt. (lbs): 14500
    • Wt Distributing Hitch - Max Tongue Wt. (lbs): 1850
    • Wt Distributing Hitch - Max Tongue Wt. (lbs): 1450
    • Fifth Wheel Hitch - Max Trailer Wt. (lbs): 18500
    • Fifth Wheel Hitch - Max Trailer Wt. (lbs): - TBD -
    • Fifth Wheel Hitch - Max Tongue Wt. (lbs): 4625
    • 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): 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): 158.94
    • Length, Overall (in): 250.08
    • 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): 42.1
    • 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: 5
    • 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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VIN: 1GT4UMEY3SF168288
Stock: CT0357A
Model: TK20743
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