2/24/2026

Manager Comments

"New Price! Summit White 2018 GMC Sierra 2500HD SLE 4WD Allison 1000 6-Speed Automatic Duramax 6.6L V8 Turbodiesel 4D Crew Cab, Allison 1000 6-Speed Automatic, 4WD, Jet Black w/Cloth Seat Trim, 18"" Chromed Aluminum Wheels, 6 Speakers, ABS brakes, Air Conditioning, Bed Liner, Bluetooth® For Phone, Cloth Seat Trim, Electronic Stability Control, Exterior Parking Camera Rear, Power steering, Power windows, Radio: AM/FM/SiriusXM/HD, Remote Keyless Entry, Remote Vehicle Starter System, Steering Wheel Audio Controls, Steering wheel mounted audio controls, Theft Deterrent System (Unauthorized Entry), Tilt steering wheel, Trip computer.Odometer is 24674 miles below market average!CALL US (301) 770-3300 or Visit us in 5501 Nicholson Lane, Rockville, MD 20852 Hablamos Espanol."

SearchCar Price

$42,977

Stock Number

CP28502

VIN:

1GT12SEY5JF128502

Miles

54,417 miles

Engine

6.6L V-8 diesel direct injection, intercooled turbo, diesel, engine with 445HP

Transmission

Allison 1000 6-Speed Automatic

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SearchCar Checkout

Comprehensive Inspection

So Good, We Stand Behind It

90 day / 4,000 mile Limited Warranty

Peace of Mind

30 day / 1,500 mile Exchange Policy

Eligible for SearchCar Buyer Protection Plan

Ask You Sales Associate for Complete Details

Vehicle Top Features

GMC 4G LTE mobile hotspot internet access
Rear mounted camera
Brake assist system
Cruise control with steering wheel mounted control
Primary monitor touchscreen
AutoTrac part-time 4WD
Duramax 6.6L V-8 diesel direct injection, intercoo
Teen Driver restricted driving mode
Bluetooth wireless audio streaming
High-intensity discharge low and high beam headlig
PASS-Key III+ immobilizer
Bluetooth handsfree wireless device connectivity
Trailer brake controller
Trailer sway control
GMC Infotainment System external memory control

Installed Options and Packages

(A31) Power Windows with Driver Express Up and Down
(A68) Rear 60/40 Folding Bench Seat (folds Up)
(A91) Remote Locking Tailgate
(ACCESS) GMC Connected Access
(AKO) Deep-Tinted Glass
(AQQ) Remote Keyless Entry
(AZ3) Front 40/20/40 Reclining Split-Bench Seat
(B1J) Rear Wheelhouse Liners
(B30) Color-Keyed Carpeting Floor Covering
(B86) Body Color Bodyside Moldings
(BLUE) Bluetooth For Phone
(C7A) 10,000 lbs (4,536 Kg) GVWR
(CGN) Spray-On Pickup Box Bed Liner
(D75) Body-Color Door Handles
(DH6) Driver and Front Passenger Vanity Mirror Visors
(DL8) Body-Color Power-Adjustable Heated Outside Mirrors
(DP6) Body-Color Mirror Caps
(FULCAP) Capped Fuel Fill
(GT4) 3.73 Rear Axle Ratio
(H0U) Jet Black
(IO5) AM/FM/SiriusXM/HD Radio
(JL1) Trailer Brake Controller
(K05) Engine Block Heater
(K40) Exhaust Brake
(K47) High-Capacity Air Cleaner
(L5P) Duramax 6.6L Turbo-Diesel V8 Engine
(LMLBAT) Dual Heavy-Duty 70 Amp Battery
(MW7) Allison 1000 6-Speed Automatic Transmission with Overdrive
(N79) Full-Size Spare 18" X 8" Steel Wheel
(NP5) Leather-Wrapped Steering Wheel
(NQF) Electronic Shift Transfer Case
(NV8) Digital Steering Assist
(PPA) EZ-Lift and Lower Tailgate
(PYR) 18" Chromed Aluminum Wheels
(QHQ) LT245/75R17E AS BW Tires
(STDTM) Cloth Seat Trim
(TG5) Single Slot CD/MP3 Player
(U2K) SiriusXM Satellite Radio
(U2L) HD Radio
(UDD) 4.2" Diagonal Color Display Driver Info Center
(UE1) OnStar and GMC Connected Services Capable
(UF2) LED Cargo Box Lighting
(UK3) Steering Wheel Audio Controls
(VV4) GMC 4G LTE
(WARANT) Fleet Customer Powertrain Limited Warranty
(Z82) Trailering Equipment
(Z85) Heavy-Duty Handling/trailering Suspension Package
(3SA) Preferred Equipment Group 3SA

Standard Features

Powertrain and Mechanical

Front mounted engine
Diesel
Compression ignition system
Longitudinal mounted engine
Iron engine block
Aluminum cylinder head
Alternator
Dual lead acid batteries
Battery run down protection
Engine block heater
Engine oil cooler
Radiator
Engine retarder system
Allison 6-speed automatic
Overdrive transmission
ICE
Tow/Haul Mode selectable mode transmission
Transmission oil cooler
PTO transmission provision
AutoTrac part-time 4WD
Four-wheel drive
All-speed ABS and driveline traction control
Electronic transfer case shift
Heavy-duty ride suspension
Independent front suspension
Torsion beam front suspension
Front anti-roll bar
Front coil springs
Gas-pressurized shock absorbers
Rigid axle rear suspension
Rear leaf springs
Regular grade rear springs
Speed sensitive power steering
Hydraulic power-assist steering system
Re-circulating ball steering
Front and rear ventilated disc brakes
Four channel ABS brakes
Driver selectable steering effort
Leaf spring rear suspension
2-wheel steering system
Stainless steel single exhaust
Automatic rear locking differential
Lock-up transmission
Duramax 6.6L V-8 diesel direct injection, intercoo
Duramax V8
Transmission electronic control
Sequential shift control
Auto locking hub control
Auxiliary power take-off
Automatic
Intercooled turbo

Safety and Security

StabiliTrak w/Proactive Roll Avoidance electronic
DuraLife 4-wheel disc brakes
4-wheel antilock (ABS) brakes
Brake assist system
Driver convex spotter mirror
Projector beam headlights
High-intensity discharge low and high beam headlig
Auto on/off headlight control
LED daytime running lights
Delay-off headlights
High mounted center stop light
Remote activated perimeter approach lighting
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
Rear seat center 3-point seatbelt
Front height adjustable seatbelts
Front seatbelt pretensioners
Illuminated entry
Analog instrumentation display
Tire specific low air pressure warning
PASS-Key III+ immobilizer
Teen Driver restricted driving mode
Hill start assist
2 seatbelt pre-tensioners
Manual rear child safety door locks
Rear mounted camera
Fade interior courtesy lights
Remote panic alarm
Pickup box cargo light

Exterior and Appearance

Galvanized steel/aluminum body panels with side im
4 doors
Spray-in pickup bed liner
Standard style pickup box
Pickup bed-rail protectors
Chrome front bumper
2 front tow hooks
Chrome rear bumper
Body-colored bodyside moldings
Black grille with chrome surround
Chrome side window trim
Body-colored door handles
Clearcoat paint
Monotone paint
Chrome hub wheel covers
Full-size spare tire with steel wheel
Crank-down spare tire
Standard style side mirrors
Trailer towing capability
Trailer wiring harness
Class IV tow rating
Trailer hitch
Trailer brake controller
Trailer sway control
18 x 8-inch front and rear chrome aluminum wheels
LT245/75SR17 AS BSW front and rear tires
Rear bumper step
Body-colored door mirrors
Black front bumper rub strip

Convenience

Conventional left rear passenger door
Power door mirrors
Tailgate
Heated driver and passenger side door mirrors
Conventional right rear passenger door
Driver visor mirror
Illuminated driver visor mirror
Passenger visor mirror
Illuminated passenger visor mirror
Front beverage holders
Mini overhead console
Overhead console storage
Locking glove box
11 beverage holders
2 seatback storage pockets
Driver and passenger door bins
Rear door bins
Locking front under seat tray
Steering wheel mounted audio controls
Cruise control with steering wheel mounted control
Driver foot rest
Retained accessory power
3 12V power outlets
Tire Fill Alert tire pressure fill assist
Power door locks with 2 stage unlocking
Keyfob activated door locks
Auto-locking doors
Power tailgate/rear door lock
Keyfob trunk control
Tachometer
Oil pressure gage
Engine/electric motor temperature gage
Voltmeter
Engine hour meter
In-radio display clock
Compass
Exterior temperature display
Redundant digital speedometer
Manual folding door mirrors
Engine temperature warning
Battery charge warning
Low level warning for coolant, fuel, washer fluid,
Key in vehicle warning
Door ajar warning
Service interval indicator
Turn signal on warning
Oil pressure warning
Transmission fluid temp warning
Trip computer
Power first-row windows
Power second-row windows
Front and rear one-touch down windows
Driver one-touch up window
Variable intermittent front windshield wipers
Fixed rear windshield
EZ Lift
EZ Lower
Rear beverage holders
Driver information center
Day/Night rearview mirror
Front reading lights
Rear reading lights
Variable instrument panel light
Headlights on reminder
Trip odometer

Comfort

6
40-20-40 split-bench front seat
Driver seat with 4-way directional controls
Manual driver seat lumbar
Front passenger seat with 4-way directional contro
Height adjustable front seat head restraints
Manual front seat head restraint control
Fixed rear seats
Split-bench rear seat
Fold-up rear seat cushion
Height adjustable rear seat head restraints
Manual rear seat head restraint control
2 rear seat head restraints
Cloth front seat upholstery
Plastic front seatback upholstery
Vinyl door trim insert
Cloth headliner material
Full headliner coverage
Full carpet floor covering
Rubber front and rear floor mats
Metal-look instrument panel insert
Urethane gear shifter material
Metal-look door panel insert
Chrome interior accents
Cloth rear seat upholstery
Carpet rear seatback upholstery
Manual climate control
Yes
Rear under seat climate control ducts
Leather and metal-look steering wheel
Manual tilting steering wheel
Deep tinted windows
Split-bench front seat
Rear seat center armrest
Front seat center armrest
Front seat armrest storage
Driver seat manual reclining, lumbar support and f
Passenger seat manual reclining and fore/aft contr
Full floor coverage
Cabback insulator

In-car Entertainment

Seek scan
Single-disc CD player
CD player located in the dashboard/instrument pane
CD player MP3 decoder
Auxiliary input jack
GMC Infotainment System external memory control
Pandora internet radio capability
3 month satellite trial subscription
Standard grade speakers
Audio system theft deterrent
GMC Infotainment System voice activated audio cont
Speed sensitive volume
Bluetooth wireless audio streaming
Fixed audio antenna
2 total number of 1st row displays
8 inch primary LCD display
Primary monitor touchscreen
6 speakers
AM/FM/digital/SiriusXM /satellite

Technology and Telematics

Bluetooth handsfree wireless device connectivity
GMC 4G LTE mobile hotspot internet access
3 USB ports

Vehicle Specifications

Powertrain and Mechanical

Valves per cylinder : 4
Displacement : 6.6 L
Bore : 4.06"
Stroke : 3.9"
Compression ratio : 16.0
Horsepower : 445 HP @2800 RPM
SAEJ1349 : AUG2004 compliant
Alternator Amps : 150 A
Battery rating : 730 CCA
Battery Amps : 70 Ah
First gear ratio : 3.1
Second gear ratio : 1.81
Third gear ratio : 1.41
Fourth gear ratio : 1
Fifth gear ratio : 0.71
Sixth gear ratio : 0.61
Reverse gear ratio : 4.49
Transmission Speeds : 6
Axle ratio : 3.73
Front brake diameter : 14"
Rear brake diameter : 14.2"
DEF capacity : 5.30 US gallons
Fuel tank capacity : 36.0 US gallons
Performance quarter mile time : 15.46 seconds
Torque : 910 lb.-ft. @ 1600 RPM
Performance acceleration : Estimated (0-60mph): 7.35 seconds
Engine Cylinders : 8
cc : 402.7 cu.in.
Injection Type : Diesel direct injection

Exterior Specs

Front tire width : 9.6"
Front tire aspect ratio : 75
Front tire diameter : 17.0"
Rear tire width : 9.6"
Rear tire aspect ratio : 75
Rear tire diameter : 17.0"
GVWR : 10,000 lbs.
GAWR front : 5,200 lbs.
GAWR rear : 6,200 lbs.
Axle capacity front : 5,200 lbs.
Axle capacity rear : 6,200 lbs.
Spring rating front : 5,200 lbs.
Towing capacity : 13,000 lbs.
Max gross combined weight rating : 25,300 lbs.
Fifth-wheel towing capacity : 13,500 lbs.
Cargo box length : 78.9"
Cargo box min width : 51"
Cargo box volume : 61 cu.ft.
Pickup box depth : 21.1"
Cargo box max width : 64.6"
Cargo box tailgate width : 62.2"
Vehicle body length : 239.5"
Vehicle body width : 80.5"
Vehicle body height : 78.2"
Wheelbase : 153.7"
Vehicle turning radius : 25.75'
Min ground clearance : 9.7"
Standard curb weight : 7462 lbs.
Standard payload : 2513 lbs.
Front track : 68.8"
Rear track : 67.3"
Front tires LT load rating : E
Rear tires LT load rating : E

Interior Specs

Leg room first-row : 45.3"
Leg room second-row : 40.9"
Head room first-row : 42.8"
Head room second-row : 40.5"
Hip room first-row : 60.7"
Hip room second-row : 60.2"
Shoulder room first-row : 64.8"
Shoulder room second-row : 64.3"

Fuel Economy and Emissions

Additional fuel types : E85
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, Optional Dealer Processing Charge $499.
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.)

Original Factory Warranty
  • Basic Years: 3
  • Basic Miles/km: 36,000
  • Drivetrain Years: 5
  • Drivetrain Miles/km: 60,000
  • Drivetrain Note: HD Duramax Diesel: 5 Years/100,000 Miles; Qualified Fleet Purchases: 5 Years/100,000 Miles
  • Corrosion Years: 3
  • Corrosion Years: 6
  • Corrosion Miles/km: 100,000
  • Corrosion Miles/km: 36,000
  • Roadside Assistance Years: 5
  • Roadside Assistance Miles/km: 60,000
  • Roadside Assistance Note: HD Duramax Diesel: 5 Years/100,000 Miles; Qualified Fleet Purchases: 5 Years/100,000 Miles
  • Maintenance Years: 2
  • Maintenance Miles/km: 24,000
  • Maintenance Note: 2 Visits

SearchCar Checkout

Comprehensive Inspection

So Good, We Stand Behind It

90 day / 4,000 mile Limited Warranty

Peace of Mind

30 day / 1,500 mile Exchange Policy

Eligible for SearchCar Buyer Protection Plan

Ask You Sales Associate for Complete Details