0.066527128219604
Used 2021 GMC Sierra for sale in CENTENNIAL
5 photos
Accident Free
No reported accidents
Vehicle Details
128,277 km
Automatic
4WD
Diesel
3L Straight 6 Cylinder Engine Tu
6 Cylinder
Pickup
Owners
Make GMC
Model Sierra
Year 2021
Trim 1500 AT4
Series 1500 AT4
Doors 4
Transmission Speeds 10
Engine Cylinders 6
Body Class Pickup
What was with this car history VIN 3GTU9EET4MG106749?
Popular features
Safety Alert Seat (Included And Only Available With (Pdj) Driver Alert Package Ii.)
Rear Cross Traffic Alert (Included And Only Available With (Pqb) Driver Alert Package I.)
Lane Change Alert With Side Blind Zone Alert (Included And Only Available With (Pqb) Driver Alert Package I.)
Lane Keep Assist With Lane Departure Warning (Included And Only Available With (Pdj) Driver Alert Package Ii.)
Forward Collision Alert (Included And Only Available With (Pdj) Driver Alert Package Ii.)
Following Distance Indicator (Included And Only Available With (Pdj) Driver Alert Package Ii.)
Front And Rear Park Assist
Ultrasonic (Included And Only Available With (Pqb) Driver Alert Package I.)
Front Pedestrian Braking (Included And Only Available With (Pdj) Driver Alert Package Ii.)
Automatic Emergency Braking (Included And Only Available With (Pdj) Driver Alert Package Ii.)
Wireless Charging (Included And Only Available With (Pdo) At4 Preferred Package.)
Adaptive Cruise Control (Included And Only Available With (Pdj) Driver Alert Package Ii.)
Sun/Moonroof
Universal Home Remote (Included And Only Available With (Pdo) At4 Preferred Package.)
Seats
Heated Second Row Outboard Seats Standard On Models Built Before 7-26-2021. Certain Vehicles Built On Or After 7-26-2021 Will Include (Rfu) Not Equipped With Heated Second Row Outboard Seats
Which Removes (Ka6) Heated Second Row Outboard Seats. See Dealer For Details.) (Requires A Crew Cab Model. *No Longer Factory Orderable
See Dealer For Current Availability*
Leather Seats
Bose Sound System
Premium 7-Speaker System With Richbass Woofer (Included And Only Available With (Pdo) At4 Preferred Package.)
License Plate Kit
Front (Will Be Forced On Orders With Ship-To States That Require Front License Plate)
Window
Power
Rear Sliding With Rear Defogger (Included And Only Available With (Pdo) At4 Preferred Package.)
Navigation System
Intellibeam
Automatic High Beam On/Off (Included And Only Available With (Pdj) Driver Alert Package Ii.)
Lpo
At4 High Clearance Step (Dealer-Installed) (Included In (Pdg) At4 Premium Package. Not Available With Any Other Rpo Or Lpo Assist Step.)
Sunroof
Power (Requires A Crew Cab Model And (Pdo) At4 Preferred Package.)
Alternator
220 Amps (Included And Only Available With (Lm2) Duramax 3.0L Turbo-Diesel I6 Engine.)
Engine Block Heater (Included With (Lm2) Duramax 3.0L Turbo-Diesel I6 Engine.)
Driver Alert Package I Includes (Ud5) Front And Rear Park Assist
(Ukc) Lane Change Alert With Side Blind Zone Alert And (Ufg) Rear Cross Traffic Alert (Includes Perimeter Lighting. Included With (Rfv) At4 Value Package And (Pdg) At4 Premium Package.)
Driver Alert Package Ii Includes (Ueu) Forward Collision Alert
(Uhx) Lane Keep Assist/Lane Departure Warning
(Uhy) Automatic Emergency Braking
(Ukj) Front Pedestrian Braking
(Tq5) Intellibeam
(Ksg) Adaptive Cruise Control And (Ue4) Following Distance Indicator Includes (Hs1) Safety Alert Seat.) (Requires (Pqb) Driver Alert Package I.
At4 Preferred Package Includes (Ug1) Universal Home Remote
(A48) Rear Sliding Power Window
(Iot) 8" Diagonal Premium Gmc Infotainment With Navigation
(Uqa) Bose Premium Audio System And (K4C) Wireless Charging (Included With (Rfv) At4 Value Package And (Pdg) At4 Premium Package.)
At4 Premium Package Includes (Pdo) At4 Preferred Package
(R3O) Lt275/65R18C Mt Blackwall Goodyear Wrangler Duratrac Tires
(Pqb) Driver Alert Package I And (Vxw) At4 High Clearance Step (Available To Upgrade To (Qae) 275/60R20Sl All-Terrain
Blackwall Tires Or (Qfv) Lt265/60R20 Mt Blackwall Goodyear Wrangler Territory Tires With (Nzh) 20" Machined Aluminum With Carbon Grey Metallic Accents Wheels. (Vxw) At4 High Clearance Step Can Be Substituted With (S6L) Sport Step
Black
Lpo But No Other Assist Steps Are Available.) *Gross*
Audio System
Premium Gmc Infotainment System With Navigation And 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 Greater Memory Note: (Pz8) Hitch Guidance With Hitch View Is Included With Trim.) (Included And Only Available With (Pdo) At4 Preferred Package.
Jet Black With Kalahari Accents
Perforated Leather Front Seat Trim
Front Bucket With Center Console (Std)
Satin Steel Metallic (Available At Extra Charge.)
Tire
Spare 265/70R17Sl All-Season
Blackwall (Std)
Tires
Lt275/65R18C Mt Blackwall Goodyear Wrangler Duratrac (Included With (Rfv) At4 Value Package
(Pdg) At4 Premium Package And (Pcj) Off-Road Performance Package.)
Wheels
18" X 8.5" (45.7 Cm X 21.6 Cm) Machined Aluminum With Dark Grey Accents (Std)
At4 Preferred Equipment Group Includes Standard Equipment
Rear Axle
3.23 Ratio
Lane Keeping Assist
Gvwr
7100 Lbs. (3221 Kg) (Requires Crew Cab 4Wd Model And (Lm2) Duramax 3.0L Turbo-Diesel I6 Engine.)
Keyless Start
Transmission
10-Speed Automatic
Electronically Controlled With Overdrive And Tow/Haul Mode. Includes Cruise Grade Braking And Powertrain Grade Braking (Most Vehicles Built On Or After 6-7-2021 With A V8 Engine And (Mqb) 10-Speed Automatic Transmission Will Have (Nss) Not Equipped With Automatic Stop/Start
Which Removes Automatic Stop/Start And Its Content.) (Std)
Engine
Duramax 3.0L Turbo-Diesel I6 (277 Hp [206.6 Kw] @ 3750 Rpm
460 Lb-Ft Of Torque [623.7 N-M] @ 1500 Rpm) Includes (Kw5) 220-Amp Alternator And (K05) Engine Block Heater.) (Standard On Tk10743 Models.
Cooled Front Seat(S)
Emissions
Federal Requirements
HandsFree/Bluetooth
Keyless Entry
Satellite Radio
Sunroof/Moonroof
Tow-Package
AT4 PREFERRED PACKAGE
DRIVER ALERT PACKAGE II
Smart Device Integration
WiFi Hotspot
Turbocharged
Heated Seats
Cooled Seats
new brakes
all new tires
(277 hp [206.6 kW] @ 3750 rpm, 460 lb-ft of torque [623.7 N-m] @ 1500 rpm) Includes (KW5) 220-amp alternator and (K05) engine block heater.) (Standard on TK10743 models.: LM2-R
(Included with (RFV) AT4 Value Package, (PDG) AT4 Premium Package and (PCJ) Off-Road Performance Package.): R3O-R
(Available at extra charge.): G9K
includes (PDO) AT4 Preferred Package, (R3O) LT275/65R18C MT blackwall Goodyear Wrangler DuraTrac tires, (PQB) Driver Alert Package I and (VXW) AT4 high clearance step (Available to upgrade to (QAE) 275/60R20SL all-terrain, blackwall tires or (QFV) LT265/60R20 MT blackwall Goodyear Wrangler Territory tires with (NZH) 20" machined aluminum with Carbon Grey Metallic accents wheels. (VXW) AT4 high clearance step can be substituted with (S6L) Sport Step, Black, LPO but no other assist steps are available.) *GROSS*: PDG
includes (UG1) Universal Home Remote, (A48) rear sliding power window, (IOT) 8" diagonal Premium GMC Infotainment with navigation, (UQA) Bose Premium Audio System and (K4C) Wireless Charging (Included with (RFV) AT4 Value Package and (PDG) AT4 Premium Package.): PDO
includes (UEU) Forward Collision Alert, (UHX) Lane Keep Assist/Lane Departure Warning, (UHY) Automatic Emergency Braking, (UKJ) Front Pedestrian Braking, (TQ5) IntelliBeam, (KSG) Adaptive Cruise Control and (UE4) Following Distance Indicator Includes (HS1) Safety Alert Seat.) (Requires (PQB) Driver Alert Package I.: PDJ-R
includes (UD5) Front and Rear Park Assist, (UKC) Lane Change Alert with Side Blind Zone Alert and (UFG) Rear Cross Traffic Alert (Includes Perimeter Lighting. Included with (RFV) AT4 Value Package and (PDG) AT4 Premium Package.): PQB-R
(Included with (LM2) Duramax 3.0L Turbo-Diesel I6 engine.): K05
(Requires a Crew Cab model and (PDO) AT4 Preferred Package.): CF5-R
(dealer-installed) (Included in (PDG) AT4 premium package. Not available with any other RPO or LPO assist step.): VXW
PACKAGE: Trailering Package includes trailer hitch, 7-pin and 4-pin connectors and (CTT) Hitch Guidance
PACKAGE: ProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (U1D) In-vehicle Trailering App
MECHANICAL: Transmission, 10-speed automatic, electronically controlled with overdrive and tow/haul mode. Includes Cruise Grade Braking and Powertrain Grade Braking (Most vehicles built on or after 6-7-2021 with a V8 engine and (MQB) 10-speed automatic transmission will have (NSS) Not Equipped with Automatic Stop/Start, which removes Automatic Stop/Start and its content.)
MECHANICAL: Rear axle, 3.23 ratio
MECHANICAL: Pickup bed
MECHANICAL: GVWR, 7000 lbs. (3175 kg) (Requires Crew Cab model with (L84) 5.3L EcoTec3 V8 engine or (L87) 6.2L EcoTec3 V8 engine.)
MECHANICAL: Air filter, heavy-duty
MECHANICAL: Automatic Stop/Start (Standard on vehicles built before 6-7-2021. Most vehicles built on or after 6-7-2021 that are equipped with a V8 engine and (MQB) 10-speed automatic transmission will have (NSS) Not Equipped with Automatic Stop/Start, which removes Automatic Stop/Start and its content. See dealer for details)
MECHANICAL: Hill Descent Control
MECHANICAL: Auto-locking rear differential
MECHANICAL: Transfer case, two-speed, electronic Autotrac with push button control (4WD models only)
MECHANICAL: Suspension, Off-Road with 2" factory installed lift and monotube shocks
MECHANICAL: Four wheel drive
MECHANICAL: Cooling, external engine oil cooler (Not available with (LM2) Duramax 3.0L Turbo-Diesel I6 engine.)
MECHANICAL: Cooling, auxiliary external transmission oil cooler (Not available with (LM2) Duramax 3.0L Turbo-Diesel I6 engine.)
MECHANICAL: Alternator, 170 amps (Included and only available with (L84) 5.3L EcoTec3 V8 engine or (L87) 6.2L EcoTec3 V8 engine. Not available with (LM2) Duramax 3.0L Turbo-Diesel I6 engine.)
MECHANICAL: Battery, heavy-duty 730 cold-cranking amps/80 Amp-hr, maintenance-free with rundown protection and retained accessory power (Included and only available with (L84) 5.3L EcoTec3 V8 engine, (L3B) 2.7L Turbo engine and (L87) 6.2L EcoTec3 V8 engine.)
MECHANICAL: Frame, fully-boxed, hydroformed front section
MECHANICAL: Trailer brake controller, integrated
MECHANICAL: Recovery hooks, Red
MECHANICAL: Skid Plates
MECHANICAL: Cargo tie downs (12), fixed, rated at 500 lbs per corner
MECHANICAL: Steering, Electric Power Steering (EPS) assist, rack-and-pinion
MECHANICAL: Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
MECHANICAL: Capless Fuel Fill
MECHANICAL: Exhaust, dual with premium tips (With (PCP) AT4 CarbonPro Edition the exhaust tips will be black.)
MECHANICAL: Exhaust, aluminized stainless-steel muffler and tailpipe
EXTERIOR: Wheels, 18" x 8.5" (45.7 cm x 21.6 cm) machined aluminum with Dark Grey accents
EXTERIOR: Tires, 265/65R18SL all-terrain, blackwall
EXTERIOR: Wheel, 17" x 8" (43.2 cm x 20.3 cm) full-size, steel spare
EXTERIOR: Wheelhouse liners, rear
EXTERIOR: Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
EXTERIOR: Bumper, front, body-color lower (Front bumper color will be high gloss black.)
EXTERIOR: Bumper, rear body-color with corner steps
EXTERIOR: CornerStep, rear bumper
EXTERIOR: Grille (Body-color surround with high gloss Black mesh and Black chrome inserts. With (PCP) AT4 CarbonPro Edition the grille will have a unique grille surround with Black Chrome finish.)
EXTERIOR: Headlamps, LED reflector (high intensity) with LED turn signals and LED signature Daytime Running Lamps
EXTERIOR: Fog lamps, LED
EXTERIOR: Taillamps, LED signature taillight with LED stop and reverse light
EXTERIOR: Mirrors, outside heated power-adjustable, power-folding and driver-side auto-dimming puddle lamps, side perimeter lighting and memory
EXTERIOR: Mirror caps, high gloss Black (Deleted with (DQS) outside power adjustable vertical trailering mirrors and mirror caps will be chrome.)
EXTERIOR: Glass, deep-tinted
EXTERIOR: Lamps, cargo area, cab mounted integrated with center high mount stop lamp, with switch in bank on left side of steering wheel
EXTERIOR: LED Cargo Area Lighting located in cargo bed activated with switch on center switch bank or key fob
EXTERIOR: Tailgate, GMC MultiPro Tailgate with six functional load/access features
EXTERIOR: Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light
EXTERIOR: Tailgate and bed rail protection caps, top
EXTERIOR: Door handles, body-color
EXTERIOR: 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. Deleted with (PCP) AT4 CarbonPro Edition. Double Cab and Crew Cab models are available with Ship Thru codes (VBE), (VCO), (VDT), (VYC) or (VYS).)
ENTERTAINMENT: 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 (Note: (PZ8) Hitch Guidance with hitch view is included with trim. Includes SiriusXM with 360L.)
ENTERTAINMENT: HD Radio (Standard on vehicles built before 7-12-2021. Certain vehicles built on or after 7-12-2021 will include (RG0) Not Equipped with HD Radio, which removes (U2L) HD Radio. See dealer for details.)
ENTERTAINMENT: SiriusXM Radio
ENTERTAINMENT: SiriusXM 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.)
ENTERTAINMENT: Audio system feature, 6-speaker system
ENTERTAINMENT: Bluetooth for phone connectivity to vehicle infotainment system
ENTERTAINMENT: Wireless Phone Projection, for Apple CarPlay and Android Auto
ENTERTAINMENT: Steering wheel audio controls
ENTERTAINMENT: 4G LTE Wi-Fi Hotspot capable (Terms and limitations apply. See onstar.com or dealer for details.)
INTERIOR: Seats, front bucket with center console
INTERIOR: Seat adjuster, driver 10-way power including lumbar
INTERIOR: Seat adjuster, passenger 10-way power including lumbar
INTERIOR: Seating, heated driver and front outboard passenger
INTERIOR: Driver memory recalls driver "presets" for power driver seat and outside mirrors
INTERIOR: Seats, ventilated driver and front passenger
INTERIOR: 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)
INTERIOR: Center Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability
INTERIOR: Floor covering, color-keyed carpeting
INTERIOR: Premium Floor Liners with removable carpet insert, front
INTERIOR: Premium Floor Liners with removable carpet insert, rear
INTERIOR: Steering column, manual Tilt-Wheel and telescoping
INTERIOR: Steering wheel, leather-wrapped
INTERIOR: Steering wheel, heated
INTERIOR: Instrument cluster, 6-gauge cluster featuring speedometer, fuel level, engine temperature, tachometer, voltage and oil pressure
INTERIOR: Driver Information Center, 4.2" diagonal color display includes driver personalization
INTERIOR: In-vehicle Trailering App, System includes checklist, trailer maintenance reminders, trailer security alerts, trailer mileage, tow/haul reminder and trailer electrical diagnostics
INTERIOR: Compass, located in instrument cluster
INTERIOR: Exterior Temperature Display, located in radio display
INTERIOR: Brake lining wear indicator
INTERIOR: Windows, power front, drivers express up/down
INTERIOR: Window, power front, passenger express up/down
INTERIOR: Windows, power rear, express down
INTERIOR: Door locks, power
INTERIOR: Keyless Open and Start
INTERIOR: Remote vehicle starter system
INTERIOR: Cruise control, steering wheel-mounted
INTERIOR: Theft-deterrent system, unauthorized entry
INTERIOR: Steering column, lock control, electrical
INTERIOR: USB ports, 2 (first row) located on instrument panel
INTERIOR: USB Ports (Inside Console with bucket seats), 2 also includes 1 SD card reader and auxiliary jack
INTERIOR: Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
INTERIOR: Power outlet, front auxiliary, 12-volt
INTERIOR: USB ports, dual, charge-only (2nd row)
INTERIOR: Power outlet, rear auxiliary, 12-volt
INTERIOR: Power outlet, bed mounted, 120-volt (400 watts shared with (KI4) instrument panel mounted power outlet)
INTERIOR: Air conditioning, dual-zone automatic climate control
INTERIOR: Air vents, rear
INTERIOR: Defogger, rear-window electric
INTERIOR: Mirror, inside rearview auto-dimming
INTERIOR: Assist handles front A-pillar mounted for driver and passenger, rear B-pillar mounted
INTERIOR: GMC Connected Access capable (Subject to terms. See onstar.com or dealer for details.)
SAFETY: StabiliTrak, stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assist
SAFETY: Daytime Running Lamps, LED signature lighting
SAFETY: 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.)
SAFETY: OnStar and GMC connected services capable (Terms and limitations apply. See onstar.com or dealer for details.)
SAFETY: Hitch Guidance with Hitch View with image adjustment, Pan/Zoom/Tilt
SAFETY: Hitch Guidance
SAFETY: HD Rear Vision Camera
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
SAFETY: Tire Pressure Monitoring System with Tire Fill Alert (does not apply to spare tire)
SAFETY: Rear Seat Reminder
GMC Sierra 1500
Body Style: Crew Cab Pickup
Body Code: E63
Drivetrain: Four Wheel Drive
Trans Order Code: MQB
Trans Type: 10
Trans Description Cont.: Automatic
First Gear Ratio (:1): 4.69
Second Gear Ratio (:1): 2.98
Third Gear Ratio (:1): 2.15
Fourth Gear Ratio (:1): 1.8
Fifth Gear Ratio (:1): 1.52
Sixth Gear Ratio (:1): 1.28
Seventh Gear Ratio (:1): 1.00
Eighth Gear Ratio (:1): 0.85
Ninth Gear Ratio (:1): 0.69
Tenth Gear Ratio (:1): 0.63
Reverse Ratio (:1): 4.86
Transfer Case Model: Magna
Transfer Case Gear Ratio (:1), High: 1.0
Transfer Case Gear Ratio (:1), Low: 2.69
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): 65.16
Second Hip Room (in): 60.24
Gross Axle Wt Rating - Front (lbs): 3800
Gross Axle Wt Rating - Rear (lbs): 3800
Curb Weight - Front (lbs): 2839
Curb Weight - Rear (lbs): 1976
Gross Vehicle Weight Rating Cap (lbs): 7100
Gross Combined Wt Rating (lbs): 15000
Tons/yr of CO2 Emissions @ 15K mi/year: 8.5
Fuel Economy Est-Combined (MPG): 24
EPA Fuel Economy Est - City (MPG): 22
EPA Fuel Economy Est - Hwy (MPG): 26
Dead Weight Hitch - Max Trailer Wt. (lbs): 5000
Dead Weight Hitch - Max Tongue Wt. (lbs): 500
Wt Distributing Hitch - Max Trailer Wt. (lbs): 8800
Wt Distributing Hitch - Max Tongue Wt. (lbs): 880
Fifth Wheel Hitch - Max Trailer Wt. (lbs): 6700
Fifth Wheel Hitch - Max Tongue Wt. (lbs): 1675
Maximum Trailering Capacity (lbs): 9200
Engine Type: Diesel I6
Fuel System: Direct Injection
Engine Order Code: LM2
Displacement: 3.0L/183
SAE Net Horsepower @ RPM: 277 @ 3750
SAE Net Torque @ RPM: 460 @ 1500
Engine Oil Cooler: Yes
Cold Cranking Amps @ 0° F (Primary): 850
Maximum Alternator Capacity (amps): 220
Maximum Alternator Watts: - TBD -
Total Cooling System Capacity (qts): - TBD -
Frame Type: Hydroformed
Suspension Type - Front: Independent
Suspension Type - Rear: Solid Axle
Spring Capacity - Front (lbs): 3800
Spring Capacity - Rear (lbs): 3850
Axle Type - Front: - TBD -
Axle Type - Rear: - TBD -
Axle Capacity - Front (lbs): 3800
Axle Capacity - Rear (lbs): 3800
Axle Ratio (:1) - Front: 3.23
Axle Ratio (:1) - Rear: 3.23
Shock Absorber Diameter - Front (mm): 50
Shock Absorber Diameter - Rear (mm): 51
Stabilizer Bar Diameter - Front (in): 1.30
Front Tire Order Code: R3O
Rear Tire Order Code: R3O
Spare Tire Order Code: XCQ
Front Tire Size: LT275/65R18C
Rear Tire Size: LT275/65R18C
Spare Tire Size: 265/70R17SL
Front Tire Capacity (lbs): - TBD -
Rear Tire Capacity (lbs): - TBD -
Spare Tire Capacity (lbs): - TBD -
Revolutions/Mile @ 45 mph - Front: - TBD -
Revolutions/Mile @ 45 mph - Rear: - TBD -
Revolutions/Mile @ 45 mph - Spare: - TBD -
Front Wheel Size (in): 18 x 8.5
Rear Wheel Size (in): 18 x 8.5
Spare Wheel Size (in): 17 x - TBD -
Front Wheel Material: Aluminum
Rear Wheel Material: Aluminum
Spare Wheel Material: Steel
Steering Type: Electric Rack & Pinion
Steering Ratio (:1), On Center: - TBD -
Steering Ratio (:1), At Lock: - TBD -
Turning Diameter - Curb to Curb (ft): 46.3
Turning Diameter - Wall to Wall (ft): - TBD -
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): 13.5 x 1.18
Rear Brake Rotor Diam x Thickness (in): 13.6 x 0.79
Fuel Tank Capacity, Approx (gal): 24
Fuel Tank Location: - TBD -
Wheelbase (in): 147.53
Length, Overall (in): 231.72
Width, Max w/o mirrors (in): 81.24
Height, Overall (in): 78.35
Overhang, Front (in): - TBD -
Overhang, Rear w/o bumper (in): - TBD -
Front Bumper to Back of Cab (in): - TBD -
Cab to Axle (in): - TBD -
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): 10.88
Ground Clearance, Rear (in): 10.88
Cargo Box Length @ Floor (in): 69.92
Cargo Box Width @ Top, Rear (in): - TBD -
Cargo Box Width @ Floor (in): 71.4
Cargo Box Width @ Wheelhousings (in): 50.63
Cargo Box (Area) Height (in): 22.4
Tailgate Width (in): - TBD -
Cargo Volume (ft³): 62.9
Ext'd Cab Cargo Volume (ft³): - TBD -
Seller description
2021 GMC Sierra 1500 AT4 4x4 – Duramax Diesel, One-Owner, Colorado Truck This 2021 GMC Sierra 1500 AT4 4x4 is a premium off-road truck combining Duramax diesel efficiency with rugged AT4 capability and refined comfort. With 79,697 miles, this Sierra stands out as a clean, one-owner Colorado truck with excellent history and strong maintenance. Powered by the highly desirable 3.0L Duramax® turbo-diesel inline-6 paired with 4x4, this Sierra delivers impressive torque, towing capability, and fuel efficiency in a full-size truck platform. [1CARFAX Ve...T4MG106749 | PDF] Vehicle Highlights 79,697 miles 3.0L Duramax® Turbo-Diesel I6 [1CARFAX Ve...T4MG106749 | PDF] 4x4 drivetrain [1CARFAX Ve...T4MG106749 | PDF] AT4 off-road trim package CARFAX 1-owner vehicle [1CARFAX Ve...T4MG106749 | PDF] Colorado-owned since new [1CARFAX Ve...T4MG106749 | PDF] Performance & Capability Efficient and torque-rich Duramax diesel engine Excellent towing and highway driving capability Smooth, confident 4x4 performance for all seasons Ideal for towing, commuting, and mountain driving Strong fuel economy compared to gas V8 competitors ? AT4 Off-Road Capability Factory AT4 off-road suspension and tuning Skid plates and off-road protection Enhanced traction systems for snow, dirt, and trails Raised ride height and aggressive stance Interior & Comfort Premium AT4 interior with refined materials Spacious Crew Cab configuration Dual-zone climate control Power-adjustable seating and modern cabin layout Quiet, comfortable ride for long-distance driving Technology & Features GMC infotainment system with touchscreen display Apple CarPlay® & Android Auto™ compatibility Bluetooth® connectivity Backup camera and driver assistance features OnStar capability with connected services [1CARFAX Ve...T4MG106749 | PDF] ? Service & Condition Highlights Recently serviced at AutoNation Buick GMC (Feb 2026) including: Battery replacement Brake inspection Full system check [1CARFAX Ve...T4MG106749 | PDF] Emissions inspection completed Regular ownership history and consistent use Dealer inspected and ready for delivery Ownership & Vehicle History 1-owner personal vehicle [1CARFAX Ve...T4MG106749 | PDF] Colorado-owned since new [1CARFAX Ve...T4MG106749 | PDF] Clean CARFAX – no accidents or damage reported [1CARFAX Ve...T4MG106749 | PDF] No structural damage or airbag deployment No open recalls reported [1CARFAX Ve...T4MG106749 | PDF] Clean title Why This Sierra AT4 Stands Out Desirable Duramax diesel + AT4 combination One-owner, clean Colorado history Strong mix of off-road capability and daily comfort Proven reliability with recent service Excellent value compared to newer diesel trucks This 2021 GMC Sierra 1500 AT4 Duramax 4x4 delivers premium off-road capability, diesel efficiency, and everyday usability—available now at AutoNation Chrysler Dodge Jeep Ram Arapahoe.
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Frequently Asked Questions About the 2021 GMC Sierra
The average price of a used 2021 GMC Sierra is $45,504 based on 69,504 listings currently available nationwide. Prices range from $7,999 to $91,340 depending on mileage, condition, and location. This particular Sierra in CENTENNIAL, CO is listed at $37,999.
Used 2021 GMC Sierra vehicles on our marketplace have an average of 49,486 miles. This specific vehicle has 79,708 miles on the odometer. You can compare mileage across all available units on the GMC Sierra listings page.
Reliability varies by model year, maintenance history, and driving conditions. We recommend checking the vehicle history report and having an independent inspection before purchase.
The 2021 GMC Sierra runs on Diesel. Exact fuel economy figures vary by trim level and driving conditions. Check fueleconomy.gov for EPA estimates specific to this model year.
There are 302,391 used Pickup vehicles priced under $40,000 currently listed on our marketplace. Browse all options on the Used Pickup under $40,000 page. You can also narrow your search to Used GMC vehicles under $40,000 if you prefer to stay with the GMC brand.
