Used 2026 GMC Sierra 2500HD AT4
Price $118,530
Starting Price $124,530
  • Wallace Courtesy Vehicle Exclusive
    -$3,000
    Dealer Discount
  • Non-Stackable Cash Delivery Allowance (NSCDA) - CBG
    -$3,000
    Required packages: 4SB
    Valid from 2026/02/03 - 2026/03/02

Sale Price $118,530
Price does not include taxes and licensing fees.

Used 2026 GMC Sierra 2500HD AT4

6.85ft Box Length - AT4 Courtesy Vehicle
65 km
Demo
Finance from
$383

$121,530.00 x 84 months @ 3.99% APR with $0.00 down payment (4.77% effective rate, cost of borrowing $17,806.99). Plus HST and license.

$383

$121,530.00 x 84 months @ 3.99% APR with $0.00 down payment (4.77% effective rate, cost of borrowing $17,806.99). Plus HST and license.

/ Weekly
Lease from
$462

$121,530.00 x 48 months @ 8.5% APR with $0.00 down payment (20,000 km/yr lease allowance, 9.33% effective rate, cost of borrowing $30,931.80). Plus HST and licence.

$462

$121,530.00 x 48 months @ 8.5% APR with $0.00 down payment (20,000 km/yr lease allowance, 9.33% effective rate, cost of borrowing $30,931.80). Plus HST and licence.

/ Weekly
Sale Price
$118,530
Price does not include taxes and licensing fees.
$118,530
Price does not include taxes and licensing fees.
+ Taxes and Fees
Vehicle Details
    Body Style
    Truck
    Engine
    6.6L 8Cyl
    Exterior Colour
    Tan
    Interior Colour
    Black
    Transmission
    Automatic
    Drivetrain
    4×4
    Doors
    4
    VIN
    1GT4UPEY0TF166940
    Stock
    166940
    Condition
    Used
    Trim Details
    Crew Cab Standard Box 4-Wheel Drive AT4

This vehicle has been previously used as a demonstrator by the dealership. It qualifies for applicable new vehicle incentives and programs, subject to eligibility requirements set by the manufacturer or program provider.

Driven as courtesy company vehicle. Wallace Chevrolet Cadillac Buick GMC is Milton's premier Chevrolet, Cadillac, Buick, and GMC dealership in Milton, Ontario. We offer an extensive selection of new and used cars, SUVs, and trucks, and our top priority is customer satisfaction, and an exceptional car buying and ownership experience. Were proud to serve the Milton and Mississauga areas, Halton Region, and the Greater Toronto Area as a leader in the auto industry. Beyond sales, we offer comprehensive auto repair and maintenance services to keep your vehicle running smoothly. Our certified technicians use state-of-the-art equipment to provide top-notch service, ensuring your car, SUV, or truck receives the best care possible. Experience the Wallace Chevrolet Cadillac Buick GMC difference today and discover why we Milton's premier GM dealer. Visit us to explore our inventory and experience our commitment to excellence in every aspect of the car ownership journey.
Installed Packages
  • At4 Preferred Equipment Group • 4SB
    includes standard equipment
  • Engine, Duramax 6.6L Turbo-Diesel V8, B20-Diesel Compatible • L5P
    (470 hp [350.5 kW] @ 2800 rpm, 975 lb-ft of torque [1322 Nm] @ 1600 rpm) (Includes (K05) engine block heater.)
  • Transmission, 10-Speed Automatic • MGM
  • Gvwr, 11,350 Lbs. (5148 Kg) • JGL
  • Rear Axle, 3.42 Ratio • GU6
  • Wheels, 20" Transit Aluminum Wheels • Q7Q
    for LPO 20" wheels and tires
  • Tires, Lt275/65R20 All-Terrain, Blackwall • QF9
  • Coastal Dune • G42
  • Seats, Front Bucket • A50
    with centre console
  • Jet Black With Kalahari Accents, Perforated Front Leather Seat Trim • HVD
  • Audio System, 13.4" Diagonal Premium Gmc Infotainment System With Google Built In Apps Such As Navigation And Voice Assistance • IOK
    includes colour touch-screen, 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
  • At4 Premium Plus Package • PDG
    includes (PDO) AT4 Preferred Package, (CF5) power sunroof, (CWM) Technology Package and (VXW) AT4 high clearance step, LPO
  • Technology Package • CWM
    includes (DRZ) Rear Camera Mirror and (UV6) Multicolour 15" Diagonal Head-Up Display
  • At4 Preferred Package • PDO
    includes (UG1) Universal Home Remote, (A48) rear sliding power window and (U01) Roof Marker Lamps
  • Lpo, Black Badging Package • RFE
    (dealer-installed), includes (SFZ) Black GMC emblems, LPO, and (RIK) Black Sierra Nameplates, LPO.
  • Engine Block Heater • K05
  • Alternator, 220 Amps • KW5
  • High Idle Switch • UF3
  • Gooseneck / 5Th Wheel Prep Package -- Hitch Platform To Accept Gooseneck Or 5Th Wheel Hitch. • Z6A
    Includes hitch platform with tray to accept ball, stamped bed holes with removable caps installed and bed mounted 7-pin trailer harness (similar to UY2 harness).
  • Exhaust Brake • K40
  • Lpo, 20" (50.8 Cm) High Gloss Black Painted Wheels • SHH
    LPO wheels will come with 4 aluminum 20" Transit Wheels from the factory with alignment specs set to 20" LPO wheel selected (dealer-installed)
  • Sunroof, Power • CF5
  • Assist Steps, Power Retractable, Black • B3L
    includes LED lighting
  • Lpo, Cargo Tie-Down Rings, Set Of 4 • 5VI
    (dealer-installed)
  • Lpo, Front And Rear Moulded Splash Guards, Black • VQK
    (dealer-installed)
  • Winter Grille Cover • BHP
  • Lamps, Smoked Amber Roof Marker, (Led) • U01
  • Lpo, Black Gmc Emblems • SFZ
    (dealer-installed)
  • Lpo, Black Sierra Nameplates • RIK
    (dealer-installed)
  • License Plate Kit, Front, Incandescent Lighting • VK3
    (will be shipped to orders with ship-to provinces that require front license plate)
  • 3 Years Sirius Xm • R6P
  • Multicolour 15" Diagonal Head-Up Display • UV6
  • Window, Power, Rear Sliding With Rear Defogger • A48
  • Universal Home Remote • UG1
  • Rear Camera Mirror • DRZ
    inside rearview auto-dimming with full camera display
No matches were found.
Options
  • Air Conditioning
  • Alloy Wheels
  • Backup Camera
  • Bluetooth Connection
  • Cooled Seats
  • Cruise Control
  • Heated Seats
  • Keyless Entry
  • Lane Assist
  • Leather Seats
  • Navigation System
  • Parking Sensors
  • Power Seats
  • Power Windows
  • Remote Start
  • Running Boards
  • Satellite Radio
  • Smart Device Integration
  • Wi-Fi Hotspot
No matches were found.
Entertainment
  • AM/FM Stereo
  • Auxiliary Audio Input
  • Bluetooth Connection
  • MP3 Player
  • Navigation System
  • Smart Device Integration
  • Requires Subscription
  • Satellite Radio
  • Premium Sound System
  • WiFi Hotspot
Exterior
  • Aluminum Wheels
  • Tires - Front All-Terrain
  • Tires - Rear All-Terrain
  • Conventional Spare Tire
  • Tire carrier lock keyed cylinder lock that utilizes same key as ignition and door
  • Bumper, front, body-colour lower
  • Bed Liner
  • CornerStep, rear bumper
  • Cargo tie downs (12), fixed, rated at 500 lbs (226.8 kg) per corner
  • Grille (Gloss Black header and grille insert bars with Black Chrome accents.)
  • Daytime Running Lights
  • Automatic Highbeams
  • Fog Lamps
  • Lamps, cargo area cab mounted integrated with centre 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 centre switch bank or key fob
  • Taillamps, Animated LED Signature Tail, Stop, turn and Reverse lamps
  • Heated Mirrors
  • Integrated Turn Signal Mirrors
  • Power Folding Mirrors
  • Power Mirror(s)
  • Privacy Glass
  • Intermittent Wipers
  • Rain Sensing Wipers
  • Variable Speed Intermittent Wipers
  • Door handles, body-colour
  • Integrated Tailgate Step
  • Tailgate, gate function manual with EZ Lift includes power lock and release, includes hitch area light
  • Tailgate and bed rail protection caps, top
Interior
  • Bucket Seats
  • Leather Seats
  • Pass-Through Rear Seat
  • Rear Bench Seat
  • Driver Adjustable Lumbar
  • Power Driver Seat
  • Passenger Adjustable Lumbar
  • Power Passenger Seat
  • Heated Front Seat(s)
  • Cooled Front Seat(s)
  • Heated Rear Seat(s)
  • Mirror Memory
  • Seat Memory
  • Centre Console, floor-mounted with cup holders, cell phone storage, power cord management, hanging file folder capability
  • Floor covering, colour-keyed carpeting
  • Floor Mats
  • Steering wheel, wrapped
  • Heated Steering Wheel
  • Steering Wheel Audio Controls
  • Adjustable Steering Wheel
  • Driver Information Centre, enhanced, 12.3" diagonal reconfigurable multicolour digital display
  • Rear Seat Reminder
  • GMC Premium information Display- 13.4" diagonal Multicolour touch screen
  • Exterior Temperature Display, located in radio display
  • Compass, located in instrument cluster
  • Power Windows
  • Power Door Locks
  • Keyless Entry
  • Keyless Start
  • Remote Engine Start
  • Adaptive Cruise Control
  • Cruise Control
  • Wireless Charging
  • Security System
  • Power outlet, instrument panel, 120-volt (400 watts shared with (KC9) bed mounted power outlet)
  • Auxiliary Audio Input
  • MP3 Player
  • Air vents, rear
  • A/C
  • Climate Control
  • Multi-Zone A/C
  • Rear Defrost
  • Auto-Dimming Rearview Mirror
  • Assist handles front A-pillar mounted for driver and passenger, rear B-pillar mounted
Mechanical
  • 8 Cylinder Engine
  • Gasoline Fuel
  • 10-Speed A/T
  • A/T
  • Rear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)
  • Running Boards/Side Steps
  • GVWR, 10,850 lbs. (4921 kg) (Included and only available with TK20743 model and (L8T) 6.6L V8 gas engine with 18", 20" or 22" wheels.)
  • Keyless Start
  • Hill Descent Control
  • Transfer case, two-speed active, electronic Autotrac with push button control
  • Locking/Limited Slip Differential
  • Four Wheel Drive
  • Cooling, external engine oil cooler
  • Cooling, auxiliary external transmission oil cooler
  • Air filter, heavy-duty
  • Air filtration monitoring
  • Battery, heavy-duty 720 cold-cranking amps/80 Amp-hr maintenance-free with rundown protection and retained accessory power (Included and only available with (L8T) 6.6L V8 gas engine.)
  • Alternator, 170 amps (Requires (L8T) 6.6L V8 gas engine.)
  • 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 when (PTT) trailer tire pressure monitor sensors are installed.)
  • Tow Hooks
  • 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
  • Power Steering
  • 4-Wheel Disc Brakes
  • ABS
  • Brake lining wear indicator
  • Capless Fuel Fill (Requires (L8T) 6.6L gas V8 engine.)
Package
  • X31 Off-Road Package includes (JHD) Hill Descent Control, (NZZ) skid plates, Off-Road suspension and Twin-tube Rancho shocks
  • Automatic Highbeams
  • Front Collision Mitigation
  • Front Collision Warning
  • Lane Departure Warning
  • Tow Hitch
  • ProGrade Trailering System includes (PZ8) Hitch Guidance with Hitch View and (UET) In-vehicle Trailering App
Safety
  • Front Collision Mitigation
  • Front Collision Warning
  • Stability Control
  • Traction Control
  • Daytime Running Lights
  • Driver Air Bag
  • Front Head Air Bag
  • Front Side Air Bag
  • Passenger Air Bag
  • Passenger Air Bag Sensor
  • Rear Head Air Bag
  • Requires Subscription
  • Telematics
  • Rear Parking Aid
  • Aerial View Display System
  • Back-Up Camera
  • Bed View Camera, camera in the CHMSL to show a view of the cargo bed display located in infotainment screen, includes Two Trailer Camera Provisions
  • Hitch Guidance dynamic single line to aid in truck trailer alignment for hitching
  • Following Distance Indicator (Included and only available with (PDI) Sierra HD Pro Safety.)
  • Lane Departure Warning
  • Cross-Traffic Alert
  • Blind Spot Monitor
  • Seat Belt Adjustable Guide Loops, front row only
  • Buckle to Drive prevents vehicle from being shifted out of Park until driver seat belt is fastened; times out after 20 seconds and encourages seat belt use (Included and only available with (PDI) Sierra HD Pro Safety.)
  • Safety Alert Seat
  • Driver Restriction Features
  • Tire Pressure Monitor
  • Trailering Information Label provides max trailer ratings for tongue weight, conventional, gooseneck and 5th wheel trailering
No matches were found.
Summary
  • Vehicle Name
    GMC Sierra 2500HD
  • Body Style
    Crew Cab Pickup
  • Body Code
    E63
Transmission
  • Drivetrain
    Four Wheel Drive
  • Trans Order Code
    MGM
  • Trans Type
    10
  • Trans Description Cont.
    Automatic
  • First Gear Ratio (:1)
    4.54
  • Second Gear Ratio (:1)
    2.87
  • Third Gear Ratio (:1)
    2.06
  • Fourth Gear Ratio (:1)
    1.72
  • Fifth Gear Ratio (:1)
    1.48
  • Sixth Gear Ratio (:1)
    1.26
  • 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)
    4.54
  • Clutch Size (in)
    N/A
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
Weight information
  • Curb Weight - Front (lbs)
    4023
  • Curb Weight - Rear (lbs)
    2822
  • Gross Vehicle Weight Rating Cap (lbs)
    11350
  • Gross Combined Wt Rating (lbs)
    27500
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 Tongue Wt. (lbs)
    1850
  • Fifth Wheel Hitch - Max Trailer Wt. (lbs)
    17300
  • Fifth Wheel Hitch - Max Tongue Wt. (lbs)
    4325
  • Maximum Trailering Capacity (lbs)
    20000
Engine
  • Engine Order Code
    L5P
  • Engine Type
    Turbocharged Diesel V8
  • Displacement
    6.6L
  • Fuel System
    Direct Injection
  • SAE Net Horsepower @ RPM
    470 @ 2800
  • SAE Net Torque @ RPM
    975 @ 1600
Electrical
  • Cold Cranking Amps @ 0° F (Primary)
    720
  • Maximum Alternator Capacity (amps)
    220
  • Maximum Alternator Watts
    N/A
Suspension
  • Suspension Type - Front
    Short/Long Arm
  • Suspension Type - Rear
    Multi-Leaf Springs
  • Axle Ratio (:1) - Front
    3.42
  • Axle Ratio (:1) - Rear
    3.42
  • Shock Absorber Diameter - Front (mm)
    2.01
  • Shock Absorber Diameter - Rear (mm)
    2.01
  • Stabilizer Bar Diameter - Front (in)
    1.38
Tires
  • Front Tire Order Code
    QF9
  • Rear Tire Order Code
    QF9
  • Spare Tire Order Code
    ZYG
  • Front Tire Size
    LT275/65R20
  • Rear Tire Size
    LT275/65R20
  • Spare Tire Size
    LT275/70R18
  • Revolutions/Mile @ 45 mph - Front (Rev/Mile)
    N/A
  • Revolutions/Mile @ 45 mph - Rear (Rev/Mile)
    N/A
  • Revolutions/Mile @ 45 mph - Spare (Rev/Mile)
    N/A
Wheels
  • Front Wheel Size (in)
    20
  • Rear Wheel Size (in)
    20
  • Front Wheel Material
    Aluminum
  • Rear Wheel Material
    Aluminum
  • Spare Wheel Material
    Steel
Steering
  • Steering Type
    Pwr Recirculating Ball
  • Turning Diameter - Curb to Curb (ft)
    52.7
  • Turning Diameter - Wall to Wall (ft)
    N/A
Brakes
  • Brake Type
    Pwr
  • Brake ABS System
    4-Wheel
  • Disc - Front
    Yes
  • Disc - Rear
    Yes
  • Front Brake Rotor Diam x Thickness (in)
    14 x 1.6
  • Rear Brake Rotor Diam x Thickness (in)
    14.1 x 1.3
Fuel tank
  • Fuel Tank Capacity, Approx (L)
    136
Exterior dimensions
  • Wheelbase (in)
    159
  • Length, Overall (in)
    250.75
  • Width, Max w/o mirrors (in)
    81.85
  • Height, Overall (in)
    79.82
  • Cab to Axle (in)
    42.17
  • 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 @ Floor (in)
    71.4
  • Cargo Box Width @ Wheelhousings (in)
    51.85
  • Cargo Box (Area) Height (in)
    21
  • Cargo Volume (ft³)
    69.5
No matches were found.