1/27/2026

Manager Comments

"Discover the ultimate blend of power, capability, and refinement in this stunning 2021 GMC Sierra 1500 AT4. This one-owner, Maryland state-inspected truck is a true force to be reckoned with, boasting a commanding presence and a host of premium features that will elevate your driving experience.Outfitted with the desirable AT4 Preferred Package, this Sierra 1500 is equipped with:• Apple CarPlay/Android Auto• Bose Premium Audio System• Wireless Charging• Power Sunroof• Adaptive Cruise Control• Leather-Appointed Seating• Heated and Cooled Front Seats• Power Liftgate• Back-Up Camera• 3.0L I6 Duramax Diesel Engine• 20"" Machined Aluminum Wheels with Carbon Grey Metallic AccentsThe powerful 3.0L I6 Duramax Diesel engine, paired with a smooth-shifting 10-speed automatic transmission, delivers an exceptional blend of performance and efficiency, with an impressive 22 city and 26 highway MPG. Whether you're tackling tough terrain or navigating the daily commute, this Sierra 1500 AT4 is ready to take on any challenge with confidence.Step inside the cabin, and you'll be greeted by a premium, well-appointed interior that exudes sophistication and attention to detail. The perforated leather-appointed seating, heated and ventilated front seats, and Bose premium audio system create a truly luxurious driving experience. The 8-inch diagonal Premium GMC Infotainment System with Navigation keeps you connected and entertained, while the wireless charging pad ensures your devices are always powered up.Designed to conquer the great outdoors, the Sierra 1500 AT4 boasts a host of off-road-focused features, including an off-road suspension, electronic locking rear differential, and red recovery hooks. Whether you're tackling the trails or navigating the city streets, this truck is ready to take you there in comfort and style.With its exceptional capability, premium features, and striking good looks, this 2021 GMC Sierra 1500 AT4 is the ultimate expression of rugged sophistication. Experience the difference for yourself and schedule a test drive today. We're confident you'll be impressed by the uncompromising performance and refined luxury this truck has to offer."

FitzWay Low Price

$38,988

Price excludes Dealer Processing Charge (not required by law): $799

Miles

65,154

Stock #

Z767419B

VIN

3GTU9EET7MG363243

Engine

3L I-6 diesel direct injection, DOHC, variable valve control, intercooled turbo, diesel, engine with 277HP

Transmission

10-Speed Automatic

Vehicle Top Features

Apple CarPlay/Android Auto smart device mirroring
4G LTE Wi-Fi Hotspot capable mobile hotspot intern
HD Rear Vision Camera w/Hitch View rear mounted ca
Brake assist system
Cruise control with steering wheel mounted control
Ventilated driver and front passenger seats
Integrated navigation system
Keyfob remote engine start
Heated steering wheel
Heated driver and front passenger seats
Heated rear seats
Leather front seat upholstery
Primary monitor touchscreen
First-row sliding and tilting glass sunroof with e
Driver seat power reclining, lumbar support, cushi

Installed Options and Packages

(360L) SiriusXM with 360L
(850BAT) 850 Heavy-Duty Battery
(A2X) 10-Way Power Driver Seat Adjuster with Lumbar
(A45) Driver Memory
(A48) Power Sliding Rear Window with Rear Defogger
(A50) Front Bucket Seats
(A7K) 10-Way Power Passenger Seat Adjuster with Lumbar
(ACCESS) GMC Connected Access Capable
(AEF) Power Front Passenger Windows with Express Up/down
(AEQ) Power Rear Windows with Express Down
(AKO) Deep-Tinted Glass
(ATH) Keyless Open and Start
(AU3) Power Door Locks
(AXG) Power Front Windows with Driver Express Up/down
(B1J) Rear Wheelhouse Liners
(B30) Color-Keyed Carpeting Floor Covering
(BTV) Remote Vehicle Starter System
(C49) Electric Rear-Window Defogger
(C5Y) 7,100 lbs (3,221 Kgs) GVWR
(CF5) Power Sunroof
(CGN) Spray-On Pickup Bed Liner with AT4 Logo
(COMP) Compass
(CTT) Hitch Guidance
(D07) Floor-Mounted Center Console
(FE9) Federal Emissions Requirements
(G80) Auto-Locking Rear Differential
(GBA) Onyx Black
(GRILLE) Body-Color Surround Grille
(GU5) 3.23 Rear Axle Ratio
(HVD) Jet Black W/Kalahari
(IOT) Premium GMC Infotainment System Radio with Navigation
(JHD) Hill Descent Control
(JL1) Integrated Trailer Brake Controller
(K05) Engine Block Heater
(K47) Heavy-Duty Air Filter
(K4C) Wireless Charging
(KA1) Heated Driver and Front Outboard Passenger Seating
(KA6) Heated 2nd Row Outboard Seats
(KC4DEL) Delete External Engine Oil Cooler
(KC9) 120-Volt Bed Mounted Power Outlet
(KI4) 120-Volt Instrument Panel Power Outlet
(KL9) Automatic Stop/start
(KNP) Auxiliary External Transmission Oil Cooler
(KPA) 12-Volt Rear Auxiliary Power Outlet
(KQV) Ventilated Driver and Front Passenger Seats
(KW5) 220 Amp Alternator
(KW7) 170 Amp Alternator
(L84) 5.3L EcoTec3 V8 Engine
(LM2) Duramax 3.0L Turbo-Diesel I6 Engine
(MCR) 2 USB Ports
(MCZ) 2 USB Ports (1st Row)
(MQB) 10-Speed Automatic Transmission
(N06) Electrical Lock Control Steering Column
(N37) Manual Tilt-Wheel and Telescoping Steering Column
(NQH) 2-Speed Transfer Case
(NZH) 20" X 9" Machined Aluminum Wheels
(NZZ) Skid Plates
(PROGTS) ProGrade Trailering System
(PZ8) Hitch Guidance with Hitch View
(QAE) 275/60R20SL AT BW Tires
(QAQ) 255/80R17SL AS BW Spare Tire
(RG0) Not Equipped with HD Radio
(STDTM) Perforated Leather-Appointed Front Seat Trim
(U1D) In-Vehicle Trailering App
(UDD) 4.2" Diagonal Color Display Driver Info Center
(UE1) OnStar and GMC Connected Services Capable
(UF2) LED Cargo Area Lighting
(UG1) Universal Home Remote
(UGA) Red Recovery Hooks
(UK3) Steering Wheel Audio Controls
(UQA) Premium Bose 7-Speaker Sound System
(UQF) 6-Speaker Audio System Feature
(USS) Rear Dual USB Charging-Only Ports
(UTJ) Theft Deterrent System (unauthorized Entry)
(UVB) HD Rear Vision Camera
(VV4) 4G LTE Wi-Fi Hotspot Capable
(WARANT) Fleet Customer Powertrain Limited Warranty
(Z7X) Off-Road Suspension
(Z82) Trailering Package
(4SB) Preferred Equipment Group 4SB
(PDO) AT4 Preferred Package

Standard Features

Exterior and Appearance

2 underbody skid plates
4 doors
Spray-in pickup bed liner
Standard style pickup box
Pickup bed extender
Pickup bed-rail protectors
Black fender flares
Black side window trim
Body-colored door handles
Body-colored front bumper
2 front tow hooks
Body-colored rear bumper
CornerStep rear bumper step
Black front bumper rub strip
Monotone paint
Trailer wiring harness
Class IV tow rating
Trailer hitch
Trailer brake controller
Trailer Sway Control (TSC) trailer sway control
Trailer backup assist with visual graphic guidance
Trailer hitch light
GMC ProGrade Trailering System trailer light test
GMC ProGrade Trailering System trailer light malfu
GMC ProGrade Trailering System trailer theft alarm
Chrome grille with body-color surround
Full-size spare tire with steel wheel
Crank-down spare tire
Standard style side mirrors
Black door mirrors
Galvanized steel/aluminum body panels with side im
Non-metallic paint
20 x 9-inch front and rear machined w/painted acce
P275/60SR20 AT BSW front and rear tires
First-row sliding and tilting glass sunroof with e
Hitch Guidance vehicle to trailer hitching assist
LED in-box lighting

Convenience

Power door locks with 2 stage unlocking
Keyfob activated door locks
All-in-one remote fob and ignition key
Auto-locking doors
Smart key with hands-free access and push button s
Power tailgate/rear door lock
Retained accessory power
Tire Fill Alert tire pressure fill assist
Trip computer
MultiPro Tailgate tailgate
Tachometer
Oil pressure gage
Engine/electric motor temperature gage
Voltmeter
Inclinometer
Transmission fluid temperature gage
Engine hour meter
In-radio display clock
Compass
Exterior temperature display
Redundant digital speedometer
Engine temperature warning
Battery charge warning
Key in vehicle warning
Service interval indicator
Turn signal on warning
Oil pressure warning
Transmission fluid temp warning
Brake pad wear indicator
Rear seat check warning
Driver information center
Headlights on reminder
Trip odometer
Power first-row windows
Power second-row windows
Front and rear one-touch down windows
Driver and passenger one-touch up windows
Variable intermittent front windshield wipers
Rear window defroster
Capless fuel filler
Driver visor mirror
Illuminated driver visor mirror
Passenger visor mirror
Illuminated passenger visor mirror
Cruise control with steering wheel mounted control
Steering wheel mounted audio controls
Front reading lights
Rear reading lights
Variable instrument panel light
Driver foot rest
Full floor console
Covered floor console storage
Mini overhead console
Overhead console storage
Conventional left rear passenger door
Conventional right rear passenger door
Auto-dimming rear view mirror
Day/Night rearview mirror
Keyfob trunk control
Keyfob window control
Keyfob remote engine start
EZ Lift
EZ Lower
Integrated tailgate step
Front beverage holders
Locking glove box
6 beverage holders
2 seatback storage pockets
Driver and passenger door bins
Rear door bins
Rear under seat tray
Rear beverage holders
Heated driver and passenger side door mirrors
Power driver and passenger door mirrors with tilt
Auto-dimming driver side mirror
Power folding door mirrors
2 12V power outlets
Garage door opener
Front wireless smart device charging
Power rear windshield
Diesel exhaust fluid (def) gage
Low level warning for oil, coolant, fuel, washer f
Front facing rear seat
Memory settings include: door mirrors
1 interior 120V AC power outlet
Door ajar warning
1 exterior 120V AC power outlet
Push-button

In-car Entertainment

2 total number of 1st row displays
8 inch primary LCD display
Primary monitor touchscreen
GMC Infotainment System voice activated audio cont
Bluetooth wireless audio streaming
Seek scan
Radio data system (RDS)
Auxiliary input jack
Premium GMC Infotainment System external memory co
Internet radio capability
3 month satellite trial subscription
Fixed audio antenna
Amplifier
Bose speakers
7 speakers
AM/FM/SiriusXMsatellite

Technology and Telematics

6 USB ports
4G LTE Wi-Fi Hotspot capable mobile hotspot intern
Bluetooth handsfree wireless device connectivity
Apple CarPlay/Android Auto smart device mirroring
Integrated navigation system

Comfort

Cabback insulator
Ventilated driver and front passenger seats
Deep tinted windows
Vinyl rear seat upholstery
Carpet rear seatback upholstery
Driver seat power reclining, lumbar support, cushi
Passenger seat power reclining, lumbar support, cu
Urethane gear shifter material
Height adjustable rear seat head restraints
Manual rear seat head restraint control
2 rear seat head restraints
Vinyl door trim insert
Simulated wood and metal-look door panel insert
Leather and metal-look steering wheel
Manual tilting steering wheel
Manual telescopic steering wheel
Heated steering wheel
5
2 memory settings
Metal-look instrument panel insert
Cloth headliner material
Full headliner coverage
Chrome interior accents
Automatic climate control
Yes
Dual-zone front climate control
Rear console climate control ducts
Bucket front seats
Driver seat with 8-way directional controls
Front passenger seat with 8-way directional contro
Height adjustable front seat head restraints
Manual front seat head restraint control
Front seat center armrest
Driver seat with 2-way power lumbar
Front passenger seat with 2-way power lumbar
Leather front seat upholstery
Plastic front seatback upholstery
Rubber front and rear floor mats with carpet inser
Full floor coverage
Heated rear seats
Heated driver and front passenger seats
Fixed rear seats
Split-bench rear seat
Fold-up rear seat cushion
60-40 folding rear seats
Full carpet floor covering
Rear seat center armrest

Safety and Security

Manual rear child safety door locks
StabiliTrak w/Proactive Roll Avoidance electronic
Hill Descent Control (HDC)
Hill Start Assist (HSA)
Immobilizer
Security system
Remote panic alarm
Analog instrumentation display
Tire specific low air pressure warning
Rear seat center 3-point seatbelt
Front seatbelt pretensioners
2 seatbelt pre-tensioners
Aero-composite headlights
LED low and high beam headlights
Auto on/off headlight control
Multiple enclosed headlights
Delay-off headlights
Teen Driver restricted driving mode
LED daytime running lights
High mounted center stop light
Remote activated perimeter approach lighting
LED brake lights
Illuminated entry
Fade interior courtesy lights
HD Rear Vision Camera w/Hitch View rear mounted ca
4-wheel antilock (ABS) brakes
Driver front impact airbag
Seat mounted side impact driver airbag
Curtain first and second-row overhead airbags
Passenger front impact airbag
Seat mounted side impact front passenger airbag
Airbag occupancy sensor
6 airbags
4-wheel disc brakes
Brake assist system
LED front fog lights
Cab mounted cargo light

Powertrain and Mechanical

Speed sensitive power steering
Electric power-assist steering system
Rack-pinion steering
Stainless steel quasi-dual exhaust with polished t
Overdrive transmission
Tow/Haul Mode selectable mode transmission
Lock-up transmission
Transmission electronic control
Sequential shift control
Automatic
Alternator
Off-road ride suspension
Independent front suspension
Short and long arm front suspension
Front anti-roll bar
Front coil springs
Rancho shock absorbers
Rigid axle rear suspension
Rear leaf springs
Regular grade rear springs
Leaf spring rear suspension
ICE
Heavy-duty lead acid battery
Battery run down protection
Radiator
Four-wheel drive
All-speed ABS and driveline traction control
Electronic transfer case shift
Automatic rear locking differential
Auto locking hub control
Front and rear ventilated disc brakes
Four channel ABS brakes
Electronic parking brake
Front mounted engine
Longitudinal mounted engine
Aluminum engine block
Aluminum cylinder head
Engine block heater
Diesel
Compression ignition system
Variable intake manifold
Duramax 3L I-6 diesel direct injection, DOHC, vari
Duramax I6
Intercooled turbo
Auto stop-start engine
10-speed automatic
AutoTrac part and full-time 4WD
Duramax 3L I-6 DOHC

Vehicle Specifications

Exterior Specs

Axle capacity front : 3,800 lbs.
Axle capacity rear : 3,800 lbs.
Spring rating front : 3,800 lbs.
Cargo box length : 69.9"
Cargo box min width : 50.6"
Cargo box volume : 62.9 cu.ft.
Pickup box depth : 22.4"
Cargo box max width : 71.4"
Vehicle body length : 231.7"
Vehicle body width : 81.2"
Vehicle body height : 78.3"
Wheelbase : 147.4"
Min ground clearance : 10.9"
Max gross combined weight rating : 15,000 lbs.
GVWR : 7,100 lbs.
Standard curb weight : 5480 lbs.
Standard payload : 2000 lbs.
Towing capacity : 8,800 lbs.
Fifth-wheel towing capacity : 6,700 lbs.
Gooseneck towing capacity : 6,700 lbs.
Front tire width : 10.8"
Front tire aspect ratio : 60
Front tire diameter : 20.0"
Rear tire width : 10.8"
Rear tire aspect ratio : 60
Rear tire diameter : 20.0"
Vehicle turning radius : 23.45'

Powertrain and Mechanical

SAEJ1349 : AUG2004 compliant
First gear ratio : 4.7
Second gear ratio : 2.99
Third gear ratio : 2.15
Fourth gear ratio : 1.77
Fifth gear ratio : 1.52
Sixth gear ratio : 1.28
Reverse gear ratio : 4.87
Seventh gear ratio : 1
Eighth gear ratio : 0.85
Ninth gear ratio : 0.69
Tenth gear ratio : 0.64
Transmission Speeds : 10
Fuel tank capacity : 24.0 US gallons
Axle ratio : 3.23
Performance quarter mile time : 14.31 seconds
Performance quarter mile speed : 97 mph
Performance acceleration : Estimated (0-60mph): 6.06 seconds
Front brake diameter : 13"
Rear brake diameter : 13.6"
Alternator Amps : 220 A
Battery rating : 850 CCA
Battery Amps : 95 Ah
Displacement : 3 L
Bore : 3.31"
Stroke : 3.54"
Compression ratio : 15.0
Horsepower : 277 HP @3750 RPM
Governed speed : 5100 RPM
Torque : 460 lb.-ft. @ 1500 RPM
cc : 182.6 cu.in.
DEF capacity : 5.30 US gallons
Valves per cylinder : 4
Engine Cylinders : 6
Injection Type : Diesel direct injection

Comfort

Air Conditioning : Air Conditioning

Interior Specs

Leg room first-row : 44.5"
Leg room second-row : 43.4"
Head room first-row : 43"
Head room second-row : 40.1"
Hip room first-row : 61.2"
Hip room second-row : 60.2"
Shoulder room first-row : 66"
Shoulder room second-row : 65.2"

Fuel Economy and Emissions

Fuel economy (city/highway/combined) : 22/26/24 MPG
Fuel economy city : 22 MPG
Fuel economy combined : 24 MPG
Fuel economy highway : 26 MPG
Fuel type : Diesel fuel type

Consumer Information

Manufacturers issue recalls every day. To learn the current status of the vehicle shown here please check SaferCar.gov. We will provide a comprehensive disclosure of the vehicle’s recall status at delivery.

Vehicles advertised as “Certified” are only eligible for certification when all recalls are addressed and closed.

If you Really Want to save money, Click Here to see our Consumer Education Information

USED VEHICLE PRICING INFORMATION
-This is a used vehicle located in the state of Maryland.
-Price Includes MD. State Inspection. (EXCLUDES HANDYMAN SPECIALS!)
-Price Does NOT Include Tax, Tags, Title or Dealer Processing Charge. Dealer Processing charge depends on the selling price of the vehicle.
-Selling price of vehicle:
$9,999 and below = $499.00 Dealer Processing Charge
$10,000 and above = $799.00 Dealer Processing Charge
TRANSFER BETWEEN DEALERSHIPS (NOT APPLICABLE TO HANDYMAN SPECIALS!)
-This vehicle will be transferred (Free of Charge) to any other Maryland FitzMall Dealership.
(Please call regarding Transfers to other Fitzmall Area Dealerships)
WARRANTY
-This Vehicle may have the remainder of its new car warranty in effect.
(Inquire at the dealership.)