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MacMaster Buick GMC Inc., ON / Used Vehicles

Used GMC Sierra 2500HDs for sale in Orangeville, ON

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13,095 km
MacMaster Deal
$95,621
Price does not include taxes and licensing fees. Price includes Admin and OMVIC fee ($721).
Finance from
$355 w
$95,621.00 financed for 72 months at 4.99% APR with $0.00 down. Cost of borrowing: $15,073.22. Plus HST and licensing. OAC. Rates may vary depending on vehicle year, credit approval, and lender guidelines.
2025 GMC Sierra 2500HD 4WD Crew Cab Standard Box AT4 in White for sale at MacMaster Buick GMC Inc. in Orangeville, ON
2025 GMC Sierra 2500HD AT4
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2025 GMC Sierra 2500HD AT4
6.85ft Box Length - AT4, 6.6L V8, DIESEL, ALLOYS, LEATHER, 1-OWNER, CERTIFIED PREOWNED!
VIN: 1GT4UPEY5SF314529
  • Body Style
    Truck
  • Engine
    6.6L 8Cyl
  • Exterior Colour
    White
  • Transmission
    Automatic
  • Drivetrain
    4×4
  • Stock
    26725A
  • Fuel Type
    Diesel
  • Dealer Code
    MAC
  • 13,095 km
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2025 GMC SIERRA 2500HD AT4 CREW CAB 4WD | CERTIFIED PRE-OWNED, ONE-OWNER, ACCIDENT-FREE, DURAMAX 6.6L TURBO DIESEL, ALLISON 10-SPEED AUTOMATIC, 4WD, AT4 PREMIUM PLUS PACKAGE, POWER SUNROOF, HEAD-UP DISPLAY, BOSE PREMIUM AUDIO, HEATED AND VENTILATED FRONT SEATS, HEATED REAR SEATS, WIRELESS APPLE CARPLAY, WIRELESS ANDROID AUTO, HD SURROUND VISION, ADAPTIVE CRUISE CONTROL, GMC MULTIPRO TAILGATE, POWER RETRACTABLE ASSIST STEPS, SPRAY-IN BEDLINER, GOOSENECK/5TH WHEEL PREP PACKAGE, BED VIEW CAMERA, 20-INCH GLOSS BLACK WHEELS AND MORE!

This Certified Pre-Owned 2025 GMC Sierra 2500HD AT4 is a one-owner, accident-free heavy-duty truck with only 13k km and premium capability built for Ontario drivers who need serious power and refinement. Equipped with the legendary Duramax 6.6L V8 Turbo Diesel paired to the Allison 10-speed automatic transmission and advanced 4WD system, this Sierra delivers confident towing, smooth highway performance, and outstanding hauling capability. Finished in Summit White with a Jet Black/Kalahari interior, the cabin combines rugged luxury with advanced technology including a massive touchscreen infotainment system, wireless smartphone connectivity, Bose premium audio, and a head-up display. Heated and ventilated seating, HD surround vision, adaptive cruise control, and multiple trailer-assist technologies make every drive easier whether you are towing, commuting, or traveling long distances. This Certified Pre-Owned GMC Sierra 2500HD AT4 for Sale in Ontario offers premium diesel truck performance with upscale comfort and everyday versatility.
MacMaster Deal
$95,621
Price does not include taxes and licensing fees. Price includes Admin and OMVIC fee ($721).
Finance from
$355 w
$95,621.00 financed for 72 months at 4.99% APR with $0.00 down. Cost of borrowing: $15,073.22. Plus HST and licensing. OAC. Rates may vary depending on vehicle year, credit approval, and lender guidelines.
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26,646 km
MacMaster Deal
$95,121
Price does not include taxes and licensing fees. Price includes Admin and OMVIC fee ($721).
Finance from
$353 w
$95,121.00 financed for 72 months at 4.99% APR with $0.00 down. Cost of borrowing: $14,994.40. Plus HST and licensing. OAC. Rates may vary depending on vehicle year, credit approval, and lender guidelines.
2025 GMC Sierra 2500HD 4WD Crew Cab Standard Box AT4 in Gray for sale at MacMaster Buick GMC Inc. in Orangeville, ON
2025 GMC Sierra 2500HD AT4
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2025 GMC Sierra 2500HD AT4
6.85ft Box Length - AT4, 6.6L V8 DIESEL, 4X4, ALLOYS, LEATHER, MACMASTER ORIGINAL, 1-OWNER, CERTIFIED PREOWNED!
VIN: 1GT4UPEY1SF225556
  • Body Style
    Truck
  • Engine
    6.6L 8Cyl
  • Exterior Colour
    Gray
  • Transmission
    Automatic
  • Drivetrain
    4×4
  • Stock
    26821A
  • Fuel Type
    Diesel
  • Dealer Code
    MAC
  • 26,646 km
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Carfax Report

2025 GMC SIERRA 2500HD AT4 CREW CAB 4WD | CERTIFIED PRE-OWNED, ONE-OWNER, MACMASTER ORIGINAL, DURAMAX 6.6L TURBO DIESEL, ALLISON 10-SPEED AUTOMATIC, 4WD, AT4 PREMIUM PLUS PACKAGE, POWER SUNROOF, HEAD-UP DISPLAY, BOSE PREMIUM AUDIO, HEATED AND VENTILATED FRONT SEATS, HEATED REAR SEATS, WIRELESS APPLE CARPLAY, WIRELESS ANDROID AUTO, HD SURROUND VISION, ADAPTIVE CRUISE CONTROL, POWER RETRACTABLE ASSIST STEPS, GMC MULTIPRO TAILGATE, GOOSENECK/5TH WHEEL PREP PACKAGE, SPRAY-IN BEDLINER, BED VIEW CAMERA, 20-INCH GLOSS BLACK WHEELS AND MORE!

This Certified Pre-Owned 2025 GMC Sierra 2500HD AT4 is a one-owner truck with only 26k km and was previously bought new from our MacMaster GMC store, offering outstanding value and peace of mind for Ontario truck buyers. Powered by the legendary Duramax 6.6L V8 Turbo Diesel paired with the Allison 10-speed automatic transmission and advanced 4WD system, this Sierra delivers exceptional towing capability, smooth highway driving, and confident year-round performance. Finished in Thunderstorm Grey Metallic with a Jet Black/Kalahari interior, the cabin blends rugged capability with upscale comfort through heated and ventilated seating, premium technology, and a massive touchscreen infotainment system with wireless Apple CarPlay and Android Auto. Advanced safety and trailering features including HD surround vision, adaptive cruise control, blind-zone monitoring, and trailer assistance technologies make hauling easier and more confident. This Certified Pre-Owned GMC Sierra 2500HD AT4 for Sale in Ontario is the ideal combination of diesel power, luxury, and heavy-duty versatility.
MacMaster Deal
$95,121
Price does not include taxes and licensing fees. Price includes Admin and OMVIC fee ($721).
Finance from
$353 w
$95,121.00 financed for 72 months at 4.99% APR with $0.00 down. Cost of borrowing: $14,994.40. Plus HST and licensing. OAC. Rates may vary depending on vehicle year, credit approval, and lender guidelines.
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35,395 km
MacMaster Deal
$94,989
Price does not include taxes and licensing fees. Price includes Admin and OMVIC fee ($721).
Finance from
$352 w
$94,989.00 financed for 72 months at 4.99% APR with $0.00 down. Cost of borrowing: $14,973.60. Plus HST and licensing. OAC. Rates may vary depending on vehicle year, credit approval, and lender guidelines.
2025 GMC Sierra 2500HD 4WD Crew Cab Standard Box Denali in Black for sale at MacMaster Buick GMC Inc. in Orangeville, ON
2025 GMC Sierra 2500HD Denali
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2025 GMC Sierra 2500HD Denali
6.85ft Box Length - DENALI, 6.6L V8 DURAMAX, 4X4, ALLOYS, LEATHER, BOSE, CERTIFIED PREOWNED!
VIN: 1GT4UREY9SF113969
  • Body Style
    Truck
  • Engine
    6.6L 8Cyl
  • Exterior Colour
    Black
  • Transmission
    Automatic
  • Drivetrain
    4×4
  • Stock
    26517A
  • Fuel Type
    Diesel
  • Dealer Code
    MAC
  • 35,395 km
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Carfax Report

2025 GMC SIERRA 2500HD DENALI | CERTIFIED PRE-OWNED, ONYX BLACK, BLACK LEATHER, 6.6L DURAMAX TURBO-DIESEL V8, ALLISON 10-SPEED AUTOMATIC, 4WD, DENALI ULTIMATE INTERIOR, MULTIPRO TAILGATE, BOSE PREMIUM AUDIO, 13.4-INCH TOUCHSCREEN, GOOGLE BUILT-IN, WIRELESS APPLE CARPLAY, WIRELESS ANDROID AUTO, HEAD-UP DISPLAY, ADAPTIVE CRUISE CONTROL, 360-DEGREE CAMERA, TRAILERING PACKAGE, HEATED AND VENTILATED FRONT SEATS, HEATED REAR SEATS, POWER SUNROOF, AND MORE!

This Certified Pre-Owned 2025 GMC Sierra 2500HD Denali with just 34k km delivers premium heavy-duty performance and refined comfort, making it a standout Used 2025 GMC Sierra 2500HD for Sale in Ontario. Its legendary 6.6L Duramax turbo-diesel V8 paired with the Allison 10-speed automatic and 4WD provides exceptional towing strength, smooth highway cruising, and confidence in all Ontario weather conditions. Inside, the Denali trim surrounds you with upscale black leather, advanced connectivity, and a massive touchscreen with Google built-in for seamless navigation and smartphone integration. A head-up display and 360-degree camera system enhance visibility, while advanced driver assistance adds reassurance on long hauls. If you’re searching for a Certified Pre-Owned GMC Sierra 2500HD Denali or a powerful 4WD diesel truck for sale in Ontario, this truck blends capability, luxury, and modern technology in one commanding package.
MacMaster Deal
$94,989
Price does not include taxes and licensing fees. Price includes Admin and OMVIC fee ($721).
Finance from
$352 w
$94,989.00 financed for 72 months at 4.99% APR with $0.00 down. Cost of borrowing: $14,973.60. Plus HST and licensing. OAC. Rates may vary depending on vehicle year, credit approval, and lender guidelines.
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103,124 km
MacMaster Deal
$55,971
Price does not include taxes and licensing fees. Price includes Admin and OMVIC fee ($721).
Finance from
$208 w
$55,971.00 financed for 72 months at 4.99% APR with $0.00 down. Cost of borrowing: $8,822.99. Plus HST and licensing. OAC. Rates may vary depending on vehicle year, credit approval, and lender guidelines.
2024 GMC Sierra 2500HD 4WD Crew Cab Standard Box Pro in White for sale at MacMaster Buick GMC Inc. in Orangeville, ON
2024 GMC Sierra 2500HD Pro
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2024 GMC Sierra 2500HD Pro
6.85ft Box Length - PRO, 6.6L V8, 4X4, STEELS, CLOTH, 1-OWNER. CERTIFIED PREOWNED!
VIN: 1GT49LE79RF306476
  • Body Style
    Truck
  • Engine
    6.6L 8Cyl
  • Exterior Colour
    White
  • Transmission
    Automatic
  • Drivetrain
    4×4
  • Stock
    26061A
  • Fuel Type
    Gasoline
  • Dealer Code
    MAC
  • 103,124 km
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Carfax Report
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2024 GMC SIERRA 2500 PRO 4WD CREW CAB | CERTIFIED PRE-OWNED, MACMASTER ORIGINAL, ONE OWNER, ACCIDENT-FREE, 6.6L V8 ENGINE, ALLISON 10-SPEED AUTOMATIC, 4X4, TRAILERING PACKAGE, HITCH GUIDANCE, TRAILER SWAY CONTROL, REAR VISION CAMERA, GMC INFOTAINMENT SYSTEM, 7-INCH TOUCHSCREEN, WIRELESS APPLE CARPLAY, ANDROID AUTO, BLUETOOTH, WI-FI HOTSPOT CAPABLE, AUTOMATIC EMERGENCY BRAKING, FORWARD COLLISION ALERT, LANE DEPARTURE WARNING, INTELLIBEAM AUTO HIGH BEAMS, LOCKING TAILGATE, INTEGRATED BEDSTEP, CHROME BUMPERS AND MORE!

This Certified Pre-Owned, one owner, accident-free 2024 GMC Sierra 2500 Pro is a heavy-duty truck built to handle serious work while delivering everyday comfort—an excellent option for anyone searching for a Used 2024 GMC Sierra 2500 for sale in Ontario. Powered by a proven 6.6L V8 paired with an Allison 10-speed automatic transmission and 4WD, it offers confident towing, hauling strength, and stability in all conditions. Inside, the Jet Black interior features durable seating, a practical layout, and easy-to-use tech including wireless smartphone integration and a responsive touchscreen. Safety is well covered with advanced driver-assist features like forward collision alert and lane departure warning. Whether you need a dependable job site partner or a capable weekend hauler, this AWD truck alternative delivers versatility, strength, and modern connectivity.
MacMaster Deal
$55,971
Price does not include taxes and licensing fees. Price includes Admin and OMVIC fee ($721).
Finance from
$208 w
$55,971.00 financed for 72 months at 4.99% APR with $0.00 down. Cost of borrowing: $8,822.99. Plus HST and licensing. OAC. Rates may vary depending on vehicle year, credit approval, and lender guidelines.
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86,533 km
MacMaster Deal
$53,889
Price does not include taxes and licensing fees. Price includes Admin and OMVIC fee ($721).
Finance from
$200 w
$53,889.00 financed for 72 months at 4.99% APR with $0.00 down. Cost of borrowing: $8,494.80. Plus HST and licensing. OAC. Rates may vary depending on vehicle year, credit approval, and lender guidelines.
2021 GMC Sierra 2500HD 4WD Crew Cab Standard Box SLE in Black for sale at MacMaster Buick GMC Inc. in Orangeville, ON
2021 GMC Sierra 2500HD SLE
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2021 GMC Sierra 2500HD SLE
6.85ft Box Length - SLE, 6.6L V8, 4X4, ALLOYS, CLOTH, 1-OWNER, MACMASTER ORIGINAL, CERTIFIED PREOWNED!
VIN: 1GT49ME7XMF265015
  • Body Style
    Truck
  • Engine
    6.6L 8Cyl
  • Exterior Colour
    Black
  • Transmission
    Automatic
  • Drivetrain
    4×4
  • Stock
    B12842
  • Fuel Type
    Gasoline
  • Dealer Code
    MAC
  • 86,533 km
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Carfax Report
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2021 GMC SIERRA 2500HD SLE 4WD CREW CAB STANDARD BOX | CERTIFIED PRE-OWNED, ONE OWNER, MACMASTER ORIGINAL, ACCIDENT-FREE, 6.6L V8 GAS ENGINE, 4WD, CREW CAB, STANDARD BOX, FRONT BENCH SEAT, TRAILERING PACKAGE, INTEGRATED TRAILER BRAKE CONTROLLER, REARVIEW CAMERA, APPLE CARPLAY, ANDROID AUTO, TOUCHSCREEN INFOTAINMENT, BLUETOOTH CONNECTIVITY, HEATED FRONT SEATS, REMOTE START, PUSH-BUTTON START, LED HEADLIGHTS, ALLOY WHEELS, SPRAY-IN BEDLINER AND MORE!

This Certified Pre-Owned, one owner, accident-free 2021 GMC Sierra 2500HD SLE offers strong value for anyone searching for a heavy-duty gas truck for sale in Ontario. Equipped with a proven 6.6L V8 gas engine and 4WD, it delivers dependable towing power and confident performance in all conditions, making it a solid choice for both work and everyday driving. The spacious crew cab features a practical black cloth interior with a front bench seat, offering added passenger capacity and flexibility. Stay connected with Apple CarPlay and Android Auto through an intuitive touchscreen, while heated front seats and remote start enhance comfort year-round. Built for capability, it also includes an integrated trailer brake controller and trailering package to make hauling easier. This Sierra 2500HD stands out as a versatile, durable, and well-equipped heavy-duty pickup.
MacMaster Deal
$53,889
Price does not include taxes and licensing fees. Price includes Admin and OMVIC fee ($721).
Finance from
$200 w
$53,889.00 financed for 72 months at 4.99% APR with $0.00 down. Cost of borrowing: $8,494.80. Plus HST and licensing. OAC. Rates may vary depending on vehicle year, credit approval, and lender guidelines.
View Details
92,354 km
MacMaster Deal
$71,889
Price does not include taxes and licensing fees. Price includes Admin and OMVIC fee ($721).
Finance from
$262 w
$71,889.00 financed for 84 months at 8.49% APR with $0.00 down. Cost of borrowing: $23,522.33. Plus HST and licensing. OAC. Rates may vary depending on vehicle year, credit approval, and lender guidelines.
2020 GMC Sierra 2500HD 4WD Crew Cab Standard Box AT4 in Blue for sale at MacMaster Buick GMC Inc. in Orangeville, ON
2020 GMC Sierra 2500HD AT4
Confirm Availability
2020 GMC Sierra 2500HD AT4
6.85ft Box Length - AT4, 6.6L V8, 4X4, ALLOYS, LEATHER, MACMASTER ORIGINAL, 1-OWNER, CERTIFIED PREOWNED!
VIN: 1GT49PEY8LF294571
  • Body Style
    Truck
  • Engine
    6.6L 8Cyl
  • Exterior Colour
    Blue
  • Transmission
    Automatic
  • Drivetrain
    4×4
  • Stock
    26680A
  • Fuel Type
    Diesel
  • Dealer Code
    MAC
  • 92,354 km
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Carfax Report
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2020 GMC SIERRA 2500HD AT4 | CERTIFIED PRE-OWNED, MACMASTER ORIGINAL, ONE OWNER, ACCIDENT-FREE, PACIFIC BLUE METALLIC, JET BLACK/KALAHARI ACCENTS LEATHER, DURAMAX 6.6L TURBO-DIESEL V8, ALLISON 10-SPEED AUTOMATIC, 4X4, AT4 OFF-ROAD PACKAGE, FACTORY LIFTED SUSPENSION, MULTIPRO TAILGATE, POWER SUNROOF, HEAD-UP DISPLAY, 360-DEGREE CAMERA, BOSE PREMIUM AUDIO, NAVIGATION SYSTEM, HEATED AND VENTILATED FRONT SEATS, HEATED REAR SEATS, HEATED STEERING WHEEL, APPLE CARPLAY ANDROID AUTO, WIRELESS CHARGING, SPRAY-IN BEDLINER, TRAILERING PACKAGE, GOOSENECK/5TH WHEEL PREP PACKAGE,AND MORE!

This Certified Pre-Owned 2020 GMC Sierra 2500HD AT4 is a one-owner, accident-free truck and a MacMaster Original, purchased new from our store, offering exceptional value for buyers searching for a Used 2020 GMC Sierra 2500HD for Sale in Ontario. Powered by the legendary Duramax 6.6L turbo-diesel V8 paired with an Allison 10-speed automatic and 4x4 capability, it delivers serious towing strength with confident, composed handling on and off the road. Inside, the Jet Black/Kalahari leather interior blends rugged style with comfort, featuring premium seating, intuitive infotainment, and seamless smartphone connectivity. Advanced safety tech like a surround-view camera and driver-assist features adds peace of mind. Whether you need a capable workhorse or a refined AWD truck for daily driving, this Sierra AT4 stands out as a versatile, high-performance pickup.
MacMaster Deal
$71,889
Price does not include taxes and licensing fees. Price includes Admin and OMVIC fee ($721).
Finance from
$262 w
$71,889.00 financed for 84 months at 8.49% APR with $0.00 down. Cost of borrowing: $23,522.33. Plus HST and licensing. OAC. Rates may vary depending on vehicle year, credit approval, and lender guidelines.
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