Used GMC Sierra 1500 AT4 for Sale near Thornhill, ON
135 vehicles found
- Year:
- 2025
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior colour:
- Black
- Combined gas mileage:
- 14 L/100km
- Fuel type:
- Gasoline
- Interior colour:
- Black
- Transmission:
- Automatic
- Mileage:
- 22,137
- Stock #:
- 25T397A
- VIN:
- 3GTUUEEL7SG114503
Sponsored by Robinson Auto Group
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
22,137 km
Guelph, ON
78 km away
Fair Deal
$67,995
- Year:
- 2026
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior colour:
- Black
- Fuel type:
- Diesel
- Interior colour:
- Black
- Transmission:
- Automatic
- Mileage:
- 35,090
- Stock #:
- R4691
- VIN:
- 3GTUUEE86TG156173
Sponsored Listing
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
35,090 km
Guelph, ON
78 km away
Fair Deal
$74,995
- Year:
- 2025
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior colour:
- White
- Combined gas mileage:
- 10 L/100km
- Fuel type:
- Diesel
- Interior colour:
- Black
- Transmission:
- Automatic
- Mileage:
- 38,707
- Stock #:
- 26T385A
- VIN:
- 3GTUUEE84SG161287
Sponsored Listing
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
38,707 km
Guelph, ON
78 km away
Good Deal
$65,995
- Year:
- 2023
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior colour:
- Onyx Black
- Combined gas mileage:
- 10 L/100km
- Fuel type:
- Diesel
- Interior colour:
- Black with Brown
- Transmission:
- 10-Speed Automatic
- Mileage:
- 140,731
- Stock #:
- 23-51960AB
- VIN:
- 3GTUUEE8XPG351960
Price drop
-$991
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
140,731 km
Brampton, ON
29 km away
Great Deal
$44,990
$43,999
- Year:
- 2025
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior colour:
- White
- Combined gas mileage:
- 10 L/100km
- Fuel type:
- Diesel
- Interior colour:
- White
- Transmission:
- Automatic
- Mileage:
- 79,704
- Stock #:
- 208048U
- VIN:
- 3GTUUEE83SG208048
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
79,704 km
Port Perry, ON
80 km away
Great Deal
$58,414
- Year:
- 2024
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Exterior colour:
- Black
- Interior colour:
- Black
- Transmission:
- Automatic
- Mileage:
- 42,981
- Stock #:
- U7684
- VIN:
- 3GTUUEEL6RG240040
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
42,981 km
Bolton, ON
25 km away
Great Deal
$56,400
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior colour:
- White
- Combined gas mileage:
- 14 L/100km
- Fuel type:
- Gasoline
- Transmission:
- Automatic
- Mileage:
- 111,361
- Stock #:
- 240388
- VIN:
- 1GTP9EED2MZ240381
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
111,361 km
Pickering, ON
29 km away
Great Deal
$33,999
- Year:
- 2024
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior colour:
- White
- Combined gas mileage:
- 10 L/100km
- Fuel type:
- Diesel
- Interior colour:
- Black
- Transmission:
- Automatic
- Mileage:
- 76,518
- Stock #:
- UF0108
- VIN:
- 3GTUUEE85RG262283
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
76,518 km
Bolton, ON
28 km away
Great Deal
$49,900
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior colour:
- Black
- Fuel type:
- Gasoline
- Mileage:
- 100,516
- Stock #:
- NG1158
- VIN:
- 3GTP9EED7MG359747
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
100,516 km
Bowmanville, ON
60 km away
Good Deal
$42,974
- Year:
- 2019
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 355 hp 5.3L V8
- Exterior colour:
- Black
- Combined gas mileage:
- 14 L/100km
- Fuel type:
- Gasoline
- Interior colour:
- Black
- Transmission:
- Automatic
- Mileage:
- 176,260
- Stock #:
- D10128
- VIN:
- 1GTP9EED3KZ283330
2019 GMC Sierra 1500
AT4 Crew Cab 4WD
176,260 km
Milton, ON
49 km away
Good Deal
$31,995
- Year:
- 2025
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior colour:
- Black
- Combined gas mileage:
- 10 L/100km
- Fuel type:
- Diesel
- Transmission:
- Automatic
- Mileage:
- 55,501
- Stock #:
- W9497
- VIN:
- 3GTUUEE86SG329026
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
55,501 km
Uxbridge, ON
41 km away
Good Deal
$62,760
- Year:
- 2025
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior colour:
- Red
- Combined gas mileage:
- 10 L/100km
- Fuel type:
- Diesel
- Interior colour:
- Black
- Transmission:
- Automatic
- Mileage:
- 71,150
- Stock #:
- Q258246
- VIN:
- 3GTUUEE89SG178246
Price drop
-$1,805
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
71,150 km
Grimsby, ON
68 km away
Good Deal
$62,998
$61,193
- Year:
- 2026
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior colour:
- Gray
- Fuel type:
- Diesel
- Interior colour:
- Black
- Transmission:
- Automatic
- Mileage:
- 17,513
- Stock #:
- TG118630
- VIN:
- 3GTUUEE85TG118630
New arrival
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
17,513 km
Cobourg, ON
99 km away
Good Deal
$70,990
- Year:
- 2023
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior colour:
- White
- Combined gas mileage:
- 14 L/100km
- Fuel type:
- Gasoline
- Interior colour:
- Black
- Transmission:
- Automatic
- Mileage:
- 34,868
- Stock #:
- 21156
- VIN:
- 3GTUUEEL3PG312633
New arrival
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
34,868 km
Mississauga, ON
25 km away
Good Deal
$56,995
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Exterior colour:
- Red
- Transmission:
- Automatic
- Mileage:
- 122,546
- Stock #:
- 7593UC
- VIN:
- 1GTU9EET9MZ335721
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
122,546 km
Home delivery from Drummondville, QC
Price includes $1,184 shipping
Good Deal
$40,172
- Year:
- 2023
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Combined gas mileage:
- 10 L/100km
- Fuel type:
- Diesel
- Transmission:
- Automatic
- Mileage:
- 93,589
- Stock #:
- 26YUK22A
- VIN:
- 3GTUUEE86PG105018
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
93,589 km
Virgil, ON
67 km away
Good Deal
$49,988
- Year:
- 2023
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Exterior colour:
- White
- Interior colour:
- Black
- Transmission:
- Automatic
- Mileage:
- 89,431
- Stock #:
- 00U62
- VIN:
- 3GTUUEEL5PG317588
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
89,431 km
Home delivery from Midland, ON
Price includes $113 shipping
Good Deal
$50,108
- Year:
- 2024
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Exterior colour:
- White
- Transmission:
- Automatic
- Mileage:
- 48,501
- Stock #:
- WB2107
- VIN:
- 3GTUUEELXRG370340
Photos coming soon
New arrival
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
48,501 km
Richmond Hill, ON
13 km away
Good Deal
$57,886
- Year:
- 2024
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior colour:
- White
- Combined gas mileage:
- 14 L/100km
- Fuel type:
- Gasoline
- Interior colour:
- Black
- Transmission:
- Automatic
- Mileage:
- 22,132
- Stock #:
- 21133
- VIN:
- 3GTUUEEL4RG336636
New arrival
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
22,132 km
Mississauga, ON
25 km away
Good Deal
$61,995
- Year:
- 2024
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior colour:
- Black
- Combined gas mileage:
- 10 L/100km
- Fuel type:
- Diesel
- Transmission:
- Automatic
- Mileage:
- 77,473
- Stock #:
- 17684U
- VIN:
- 3GTUUEE8XRG449955
New arrival
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
77,473 km
Home delivery from Drummondville, QC
Price includes $1,184 shipping
Good Deal
$54,173
- Year:
- 2026
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior colour:
- White
- Combined gas mileage:
- 15 L/100km
- Fuel type:
- Gasoline
- Interior colour:
- Black
- Transmission:
- Automatic
- Mileage:
- 14,000
- Stock #:
- G148486
- VIN:
- 3GTUUEEL3TG148486
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
14,000 km
Home delivery from Listowel, ON
Price includes $186 shipping
Good Deal
$68,181
- Year:
- 2024
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Exterior colour:
- White
- Interior colour:
- Black
- Transmission:
- Automatic
- Mileage:
- 92,342
- Stock #:
- 12-26511A
- VIN:
- 3GTUUEEL1RG421692
New arrival
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
92,342 km
Home delivery from Bancroft, ON
Free home delivery
Good Deal
$52,900
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 277 hp 3L I6 Diesel
- Exterior colour:
- Red
- Combined gas mileage:
- 10 L/100km
- Fuel type:
- Diesel
- Interior colour:
- Black
- Transmission:
- Automatic
- Mileage:
- 47,667
- Stock #:
- MG109621
- VIN:
- 3GTU9EET4MG109621
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
47,667 km
Guelph, ON
76 km away
Good Deal
$48,651
- Year:
- 2025
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior colour:
- Black
- Combined gas mileage:
- 10 L/100km
- Fuel type:
- Diesel
- Transmission:
- Automatic
- Mileage:
- 33,798
- Stock #:
- C-29591
- VIN:
- 3GTUUEE88SG229591
Sponsored Listing
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
33,798 km
Brampton, ON
26 km away
Fair Deal
$64,995
4.0 Overall rating
Filter by rating
Anonymous
Reviewed a 2019 GMC AT4 Crew Cab 4WD on Sep 9, 2024
The truck had all the features I wanted and the price was in-line, or better with others in my search.
Is this review helpful?
Buddy H
Reviewed a 2019 GMC AT4 Crew Cab 4WD on Jan 5, 2025
Slightly over priced for the miles I would pay $29000-$30000 all day
Is this review helpful?
FAQs
How much does the GMC Sierra 1500 AT4 cost in Thornhill, ON?
The average GMC Sierra 1500 AT4 costs about $34,842.14. The average price has decreased by -0.1% since last year. The 137 for sale near Thornhill, ON on CarGurus, range from $24,990 to $97,282 in price.
What is the fuel economy of the GMC Sierra 1500 AT4?
Depending on the engine and options, the GMC Sierra 1500 AT4 gets between 9 and 15 L(e)/100 km.
What fuel types are available?
Diesel, Gasoline engines are available.
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