Used GMC Sierra 1500 AT4 for Sale near Unionville, ON
147 vehicles found
- 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
Sponsored by Mark Wilson's Better Used Cars
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
47,667 km
Guelph, ON
91 km away
Good Deal
$48,488
- Year:
- 2026
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior colour:
- Brown (Beige)
- Fuel type:
- Diesel
- Transmission:
- Automatic
- Mileage:
- 12,302
- Stock #:
- TG151933
- VIN:
- 3GTUUEE81TG151933
Sponsored Listing
2026 GMC Sierra 1500
AT4 Crew Cab 4WD
12,302 km
Peterborough, ON
86 km away
Good Deal
$69,342
- Year:
- 2022
- 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:
- Jet Black with Kalahari accents
- Transmission:
- Automatic
- Mileage:
- 258,365
- Stock #:
- HP269
- VIN:
- 3GTUUEET7NG552524
Sponsored Listing
2022 GMC Sierra 1500
AT4 Crew Cab 4WD
258,365 km
Orillia, ON
84 km away
Fair Deal
$32,995
- 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
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
34,868 km
Mississauga, ON
41 km away
Great Deal
$55,995
- 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:
- White
- Transmission:
- Automatic
- Mileage:
- 79,704
- Stock #:
- 208048U
- VIN:
- 3GTUUEE83SG208048
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
79,704 km
Port Perry, ON
75 km away
Great Deal
$58,414
- 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
- Transmission:
- Automatic
- Mileage:
- 64,321
- Stock #:
- 323328U
- VIN:
- 3GTUUEE83SG323328
Price drop
-$2,473
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
64,321 km
Port Perry, ON
75 km away
Great Deal
$62,876
$60,403
- 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:
- 177,570
- Stock #:
- D10128
- VIN:
- 1GTP9EED3KZ283330
2019 GMC Sierra 1500
AT4 Crew Cab 4WD
177,570 km
Milton, ON
65 km away
Great 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
Price drop
-$2,000
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
55,501 km
Uxbridge, ON
26 km away
Great Deal
$62,760
$60,760
- Year:
- 2022
- 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:
- 155,650
- Stock #:
- D10471
- VIN:
- 3GTPUEEL5NG590153
New arrival
2022 GMC Sierra 1500
AT4 Crew Cab 4WD
155,650 km
Milton, ON
65 km away
Great Deal
$37,495
- 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
36 km away
Great Deal
$55,554
- 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
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
140,731 km
Brampton, ON
43 km away
Great Deal
$41,999
- Year:
- 2024
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 3L I6 Diesel
- Exterior colour:
- Black
- Combined gas mileage:
- 10 L/100km
- Fuel type:
- Diesel
- Transmission:
- Automatic
- Mileage:
- 97,255
- Stock #:
- j0299
- VIN:
- 3GTUUEE82RG238815
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
97,255 km
Home delivery from Sorel-tracy, QC
Price includes $816 shipping
Great Deal
$48,808
- 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:
- Black
- Combined gas mileage:
- 14 L/100km
- Fuel type:
- Gasoline
- Interior colour:
- Black
- Transmission:
- Automatic
- Mileage:
- 78,217
- Stock #:
- 161318
- VIN:
- 3GTUUEEL2RG161318
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
78,217 km
Oakville, ON
53 km away
Great Deal
$51,979
- 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
18 km away
Great Deal
$33,999
- Year:
- 2023
- 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:
- 125,524
- Stock #:
- 17685U
- VIN:
- 3GTUUEE83PG147338
Price drop
-$1,000
2023 GMC Sierra 1500
AT4 Crew Cab 4WD
125,524 km
Home delivery from Drummondville, QC
Price includes $1,155 shipping
Good Deal
$48,489
$48,644
- 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:
- 52,004
- Stock #:
- RG183466
- VIN:
- 3GTUUEE81RG183466
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
52,004 km
Peterborough, ON
86 km away
Good Deal
$55,997
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Engine:
- 420 hp 6.2L V8
- Exterior colour:
- Gray (Dark Sky Metallic)
- Combined gas mileage:
- 15 L/100km
- Fuel type:
- Gasoline
- Transmission:
- Automatic
- Mileage:
- 126,775
- Stock #:
- E3257
- VIN:
- 3GTP9EEL0MG106521
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
126,775 km
St Catharines, ON
82 km away
Good Deal
$41,698
- 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
47 km away
Good Deal
$42,735
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Exterior colour:
- Black
- Interior colour:
- Jet Black with Kalahari accents
- Transmission:
- Automatic
- Mileage:
- 86,997
- Stock #:
- P1414
- VIN:
- 3GTP9EEL6MG262403
Price drop
-$1,000
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
86,997 km
Home delivery from Chambly, QC
Price includes $1,514 shipping
Good Deal
$43,998
$44,512
- 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
- Transmission:
- Automatic
- Mileage:
- 72,777
- Stock #:
- 446930U
- VIN:
- 3GTU9EET3MG446930
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
72,777 km
Port Perry, ON
75 km away
Good Deal
$47,996
- 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:
- 92,087
- Stock #:
- 00681
- VIN:
- 3GTUUEE89RG269740
2024 GMC Sierra 1500
AT4 Crew Cab 4WD
92,087 km
Home delivery from Saint-hubert, QC
Price includes $995 shipping
Good Deal
$51,990
- 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:
- 71,152
- Stock #:
- GCBQ258246
- VIN:
- 3GTUUEE89SG178246
2025 GMC Sierra 1500
AT4 Crew Cab 4WD
71,152 km
Grimsby, ON
80 km away
Good Deal
$61,193
- Year:
- 2021
- Make:
- GMC
- Model:
- Sierra 1500
- Body type:
- Pickup Truck
- Doors:
- 4 doors
- Drivetrain:
- Four-Wheel Drive
- Exterior colour:
- Black
- Transmission:
- Automatic
- Mileage:
- 74,230
- Stock #:
- 260066P
- VIN:
- 3GTU9EET0MG423265
Price drop
-$1,536
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
74,230 km
Home delivery from Ottawa, ON
Price includes $677 shipping
Good Deal
$45,995
$45,136
- 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
- Transmission:
- Automatic
- Mileage:
- 72,777
- Stock #:
- 446930U
- VIN:
- 3GTU9EET3MG446930
Sponsored Listing
2021 GMC Sierra 1500
AT4 Crew Cab 4WD
72,777 km
Port Perry, ON
75 km away
Good Deal
$47,996
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 Unionville, ON?
The average GMC Sierra 1500 AT4 costs about $34,282.10. The average price has decreased by -1.8% since last year. The 147 for sale near Unionville, ON on CarGurus, range from $24,990 to $101,024 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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