Used GMC Cars for Sale near St Thomas, ON

462 results

St Thomas, ON

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2024 GMC Terrain

SLE AWD

58,591 kilometres

$29,208

Fair Deal

London, ON

28 km away

Year:: 2024
Make:: GMC
Model:: Terrain
Body type:: SUV / Crossover
Doors:: 4 doors
Drivetrain:: All-Wheel Drive
Engine:: 175 hp 1.5L I4
Exterior colour:: Black
Combined gas mileage:: 9 L/100km
Fuel type:: Gasoline
Transmission:: 9-Speed Automatic
Mileage:: 58,591
Stock number:: U11074
VIN:: 3GKALTEG4RL334684

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2023 GMC Sierra 1500

SLE Crew Cab 4WD

129,246 kilometres

$39,778

Fair Deal

Warwick, ON

61 km away

Year:: 2023
Make:: GMC
Model:: Sierra 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Exterior colour:: White
Transmission:: Automatic
Mileage:: 129,246
Stock number:: 213126
VIN:: 1GTUUBED7PZ213126

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2024 GMC Sierra 1500

Elevation Crew Cab 4WD

59,979 kilometres

$44,983

Good Deal

Kitchener, ON

95 km away

Year:: 2024
Make:: GMC
Model:: Sierra 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 310 hp 2.7L I4
Exterior colour:: Black
Combined gas mileage:: 13 L/100km
Fuel type:: Gasoline
Interior colour:: Black
Transmission:: Automatic
Mileage:: 59,979
Stock number:: G114082
VIN:: 3GTPUCEK5RG114082

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2024 GMC Terrain

SLE AWD

56,169 kilometres

$26,799

Great Deal

Ingersoll, ON

37 km away

Year:: 2024
Make:: GMC
Model:: Terrain
Body type:: SUV / Crossover
Doors:: 4 doors
Drivetrain:: All-Wheel Drive
Engine:: 175 hp 1.5L I4
Exterior colour:: White
Combined gas mileage:: 9 L/100km
Fuel type:: Gasoline
Interior colour:: Black
Transmission:: Automatic
Mileage:: 56,169
Stock number:: DR7643
VIN:: 3GKALTEG3RL335518

2020 GMC Savana Cargo

2500 RWD

130,826 kilometres

$22,495

Great Deal

London, ON

20 km away

Year:: 2020
Make:: GMC
Model:: Savana Cargo
Body type:: Van
Doors:: 3 doors
Drivetrain:: Rear-Wheel Drive
Engine:: 276 hp 4.3L V6
Exterior colour:: White
Fuel type:: Gasoline
Interior colour:: Brown (Beige)
Transmission:: Automatic
Mileage:: 130,826
Stock number:: 97949
VIN:: 1GTW7AFP9L1156388

2021 GMC Sierra 1500

AT4 Crew Cab 4WD

44,345 kilometres

$49,999

Great Deal

Sarnia, ON

99 km away

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:: Red
Combined gas mileage:: 14 L/100km
Fuel type:: Gasoline
Transmission:: Automatic
Mileage:: 44,345
Stock number:: MG207237T
VIN:: 3GTP9EED3MG207237

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2024 GMC Terrain

SLE AWD

63,306 kilometres

$25,799

Great Deal

Ingersoll, ON

37 km away

Year:: 2024
Make:: GMC
Model:: Terrain
Body type:: SUV / Crossover
Doors:: 4 doors
Drivetrain:: All-Wheel Drive
Engine:: 175 hp 1.5L I4
Exterior colour:: Gray
Combined gas mileage:: 9 L/100km
Fuel type:: Gasoline
Interior colour:: Black
Transmission:: Automatic
Mileage:: 63,306
Stock number:: DR7644
VIN:: 3GKALTEG6RL335495

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2023 GMC Sierra 2500HD

Denali Crew Cab 4WD

97,245 kilometres

$73,998

Great Deal

Kitchener, ON

93 km away

Year:: 2023
Make:: GMC
Model:: Sierra 2500HD
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 6.6L V8 Biodiesel
Exterior colour:: White
Fuel type:: Biodiesel
Transmission:: Automatic
Mileage:: 97,245
Stock number:: 26F3200A
VIN:: 1GT49REY6PF180327

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2023 GMC Sierra 1500

Elevation Crew Cab 4WD

44,454 kilometres

$49,464

Great Deal

Kitchener, ON

95 km away

Year:: 2023
Make:: GMC
Model:: Sierra 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 355 hp 5.3L V8
Exterior colour:: Silver
Combined gas mileage:: 13 L/100km
Fuel type:: Gasoline
Interior colour:: Black
Transmission:: Automatic
Mileage:: 44,454
Stock number:: G342564
VIN:: 3GTUUCEDXPG342564

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2023 GMC Canyon

AT4 Crew Cab 4WD

34,650 kilometres

$47,890

Great Deal

Cambridge, ON

99 km away

Year:: 2023
Make:: GMC
Model:: Canyon
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 310 hp 2.7L I4
Exterior colour:: Black
Combined gas mileage:: 13 L/100km
Fuel type:: Gasoline
Transmission:: Automatic
Mileage:: 34,650
Stock number:: IW87278
VIN:: 1GTP6DEK8P1187278

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2024 GMC Sierra 1500

Elevation Crew Cab 4WD

34,610 kilometres

$51,993

Great Deal

Kitchener, ON

95 km away

Year:: 2024
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:: 34,610
Stock number:: G250922
VIN:: 3GTUUCED6RG250922

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2023 GMC Sierra 1500

Pro Crew Cab 4WD

39,466 kilometres

$31,999

Great Deal

London, ON

27 km away

Year:: 2023
Make:: GMC
Model:: Sierra 1500
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 310 hp 2.7L I4
Exterior colour:: Gray
Combined gas mileage:: 13 L/100km
Fuel type:: Gasoline
Transmission:: Automatic
Mileage:: 39,466
Stock number:: E6437
VIN:: 3GTPUAEK7PG168940

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2026 GMC Sierra 1500

AT4 Crew Cab 4WD

7,723 kilometres

$74,990

Great Deal

Certified Pre-Owned

Tillsonburg, ON

54 km away

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
Combined gas mileage:: 11 L/100km
Fuel type:: Diesel
Interior colour:: Black
Transmission:: Automatic
Mileage:: 7,723
Stock number:: 26C229A
VIN:: 3GTUUEE8XTG114850

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2021 GMC Canyon

Denali Crew Cab 4WD

107,270 kilometres

$35,495

Great Deal

Waterloo, ON

95 km away

Year:: 2021
Make:: GMC
Model:: Canyon
Body type:: Pickup Truck
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 308 hp 3.6L V6
Exterior colour:: Onyx Black
Combined gas mileage:: 13 L/100km
Fuel type:: Gasoline
Interior colour:: Jet Black
Transmission:: Automatic
Mileage:: 107,270
Stock number:: OP293
VIN:: 1GTG6EEN6M1181331

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2021 GMC Sierra 1500

Denali Crew Cab 4WD

150,008 kilometres

$38,727

Great Deal

London, ON

27 km away

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:: Black
Combined gas mileage:: 10 L/100km
Fuel type:: Diesel
Transmission:: Automatic
Mileage:: 150,008
Stock number:: 15-IC086
VIN:: 3GTU9FET7MG238510

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2024 GMC Terrain

SLE AWD

75,931 kilometres

$24,495

Great Deal

Cambridge, ON

99 km away

Year:: 2024
Make:: GMC
Model:: Terrain
Body type:: SUV / Crossover
Doors:: 4 doors
Drivetrain:: All-Wheel Drive
Engine:: 175 hp 1.5L I4
Exterior colour:: Blue
Combined gas mileage:: 9 L/100km
Fuel type:: Gasoline
Transmission:: 9-Speed Automatic
Mileage:: 75,931
Stock number:: RP1400
VIN:: 3GKALTEG9RL190355

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2025 GMC Sierra 1500

SLT Crew Cab 4WD

23,392 kilometres

$62,694

Great Deal

Certified Pre-Owned

London, ON

27 km away

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:: 23,392
Stock number:: 255234A
VIN:: 3GTUUDE87SG298248

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2022 GMC Terrain

SLE AWD

170,690 kilometres

$17,495

Great Deal

Waterloo, ON

95 km away

Year:: 2022
Make:: GMC
Model:: Terrain
Body type:: SUV / Crossover
Doors:: 4 doors
Drivetrain:: All-Wheel Drive
Engine:: 170 hp 1.5L I4
Exterior colour:: Quicksilver Metallic
Combined gas mileage:: 9 L/100km
Fuel type:: Gasoline
Interior colour:: Jet Black
Transmission:: Automatic
Mileage:: 170,690
Stock number:: 265761A
VIN:: 3GKALTEV3NL169641

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2016 GMC Savana Cargo

2500 RWD

236,795 kilometres

$11,997

Great Deal

Kitchener, ON

97 km away

Year:: 2016
Make:: GMC
Model:: Savana Cargo
Body type:: Van
Doors:: 3 doors
Drivetrain:: Rear-Wheel Drive
Engine:: 285 hp 4.8L V8
Exterior colour:: White
Fuel type:: Gasoline
Interior colour:: Gray
Transmission:: 6-Speed Automatic
Mileage:: 236,795
VIN:: 1GTW7AFF7G1313896

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2025 GMC Sierra 1500

AT4 Crew Cab 4WD

37,518 kilometres

$65,999

Great Deal

Certified Pre-Owned

Simcoe, ON

72 km away

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:: 37,518
Stock number:: 5100
VIN:: 3GTUUEE80SG255604

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2015 GMC Savana Cargo

2500 RWD

186,900 kilometres

$12,495

Great Deal

London, ON

26 km away

Year:: 2015
Make:: GMC
Model:: Savana Cargo
Body type:: Van
Doors:: 3 doors
Drivetrain:: Rear-Wheel Drive
Engine:: 285 hp 4.8L V8
Exterior colour:: White
Fuel type:: Gasoline
Transmission:: 6-Speed Automatic
Mileage:: 186,900
Stock number:: OX:8960
VIN:: 1GTW7FCF9F1282327

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2023 GMC Acadia

Denali AWD

68,268 kilometres

$37,998

Great Deal

Certified Pre-Owned

Cambridge, ON

99 km away

Year:: 2023
Make:: GMC
Model:: Acadia
Body type:: SUV / Crossover
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 228 hp 2L I4
Exterior colour:: White
Combined gas mileage:: 10 L/100km
Fuel type:: Gasoline
Transmission:: Automatic
Mileage:: 68,268
Stock number:: 260799A
VIN:: 1GKKNXL43PZ131760

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2021 GMC Acadia

Denali AWD

91,324 kilometres

$36,935

Fair Deal

Cambridge, ON

99 km away

Year:: 2021
Make:: GMC
Model:: Acadia
Body type:: SUV / Crossover
Doors:: 4 doors
Drivetrain:: Four-Wheel Drive
Engine:: 310 hp 3.6L V6
Exterior colour:: Gray
Combined gas mileage:: 11 L/100km
Fuel type:: Gasoline
Interior colour:: Black
Transmission:: Automatic
Mileage:: 91,324
Stock number:: U3323
VIN:: 1GKKNXLS5MZ210650

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Reviews

4.5 Overall rating

(1,566 reviews)

Customers say

GMC offers a lineup of trucks and SUVs that are generally praised for their reliable performance, spacious interiors, and towing capabilities. Owners appreciate their rugged design and the comfort they provide, especially in models like the Sierra and Yukon. However, common criticisms include fuel economy issues and high pricing for some models. Despite these drawbacks, GMC vehicles are often recognized for their power, luxurious features, and off-road capabilities, making them solid choices for both daily driving and rugged use.

AI generated from the text of customer reviews.

What people say

comfort fuel economy interior performance power

Michael S

5.0

Reviewed a 2021 GMC SLT 4WD on Apr. 26, 2026

Getting the diesel was the best decision! Far superior to the gasoline engine options.

Derek S

5.0

Reviewed a 2023 GMC Acadia on Nov. 17, 2025

Has all of the added features and technology of a high end luxury SUV without the price tag!! Ride is exceptionally smooth even for AT4!!

Aristotle A

5.0

Reviewed a 2022 GMC Denali Ultimate Crew Cab 4WD on Oct. 16, 2025

Love this truck! Love the inline 6 diesel! And my fiance loves the massaging seats!

Pamela S

5.0

Reviewed a 2016 GMC Canyon on Jul. 03, 2025

Truck was totaled by another driver hitting me and every airbag deployed all around and saved my life

Bruce S

5.0

Reviewed a 2025 GMC Denali Ultimate 4WD on Apr. 22, 2025

This by far the nicest vehicle I've ever owned. There is not one feature missing from this beautiful automobile. The Denali trim is already amazing, but the Denali Ultimate it amazing!