Home
May Sales Event
New Inventory
Build & Price
Pre-Owned Inventory
Certified Pre-Owned Program Information
Certified Pre-Owned Inventory
Service & Parts
Certified Service
Order Parts
Service Specials
Book Service Appointment
GM Protection Plans
Dealership
Contact Us
Meet Our Team
Location & Hours
Community Support
Thomas Hall Of Fame – Awards
Menu
Close
100 University Ave W,
Cobourg, ON K9A 4L1
Visit Us
100 University Ave W,
Cobourg, ON K9A 4L1
Call Us
Local
+1-905-372-5447
Call Us
Toll Free
+1-800-267-4646
Loading...
Thomas Buick GMC Ltd, ON
/
Used Vehicles
GMCs for sale in Cobourg, ON
Saved
Recent
Search
Filters
Search
Compare
List
Grid
Sort by
Sort by
Newest Year
Oldest Year
Highest Price
Lowest Price
Highest Mileage
Lowest Mileage
Descending By Make
Ascending By Make
Newest Added To Site
Oldest Added To Site
Close
Loading...
Confirm Availability
*
Required fields
First Name
*
Last Name
*
Phone Number
*
Email
*
Message
Send me exclusive offers and promotions.
View disclaimer.
Submit
23,774 km
Thomas Price
$75,995
Price does not include taxes and licensing fees.
Add to Compare
2026 GMC Sierra 1500 AT4
23,774 km
$75,995
Confirm Availability
Close
1 of 18
2026 GMC Sierra 1500 AT4
Confirm Availability
Request Information
2026
GMC
Sierra 1500
2026 GMC SIERRA 1500 AT4 3.0L Diesel, Leather, Sunroof, Tow mirrors, Black On Black! Clean Carfax One Owner!
VIN: 3GTUUEE81TG129267
Stock
UT29267
Engine
3.0L 6Cyl
Transmission
Automatic
Fuel Type
Diesel
23,774 km
Thomas Price
$75,995
Price does not include taxes and licensing fees.
View Details
Request More Info
Add to Compare
52,523 km
Thomas Price
$66,995
Price does not include taxes and licensing fees.
Add to Compare
2025 GMC Sierra 1500 AT4
52,523 km
$66,995
Confirm Availability
Close
1 of 18
2025 GMC Sierra 1500 AT4
Confirm Availability
Request Information
2025
GMC
Sierra 1500
2025 SIERRA 1500 AT4 Crew Cab 3.0L Duramax Diesel, Sunroof, Tech package, Tow Mirrors! AT4 Preferred Package
VIN: 3GTUUEE83SG225867
Stock
UT25867
Engine
3.0L 6Cyl
Transmission
Automatic
Fuel Type
Diesel
52,523 km
Thomas Price
$66,995
Price does not include taxes and licensing fees.
View Details
Request More Info
Add to Compare
44,692 km
Thomas Price
$67,995
Price does not include taxes and licensing fees.
Add to Compare
2025 GMC Sierra 1500 AT4
44,692 km
$67,995
Confirm Availability
Close
1 of 25
2025 GMC Sierra 1500 AT4
Confirm Availability
Request Information
2025
GMC
Sierra 1500
SIERRA 1500 AT4 3.0L Duramax Diesel, Sunroof, Tow Mirrors, Standard Box 6'6" Clean Carfax
VIN: 3GTUUEE82SG170747
Stock
UT70747
Engine
3.0L 6Cyl
Transmission
Automatic
Fuel Type
Diesel
44,692 km
Thomas Price
$67,995
Price does not include taxes and licensing fees.
View Details
Request More Info
Add to Compare
28,157 km
Thomas Price
$69,995
Price does not include taxes and licensing fees.
Add to Compare
2025 GMC Sierra 1500 AT4
28,157 km
$69,995
Confirm Availability
Close
1 of 14
2025 GMC Sierra 1500 AT4
Confirm Availability
Request Information
2025
GMC
Sierra 1500
2025 SIERRA 1500 AT4 3.0L Duramax Diesel, Sunroof, AT4 Preferred pack, 20 inch wheels, Clean Carfax!
VIN: 3GTUUEE85SG148886
Stock
UT48886
Engine
3.0L 6Cyl
Transmission
Automatic
Fuel Type
Diesel
28,157 km
Thomas Price
$69,995
Price does not include taxes and licensing fees.
View Details
Request More Info
Add to Compare
65,325 km
Thomas Price
$65,995
Price does not include taxes and licensing fees.
Add to Compare
2025 GMC Sierra 1500 AT4
65,325 km
$65,995
Confirm Availability
Close
1 of 18
2025 GMC Sierra 1500 AT4
Confirm Availability
Request Information
2025
GMC
Sierra 1500
Sierra 1500 AT4 Short Box 1500, 3.0L Duramax Diesel, Volcanic Red Tintcoat, 20 inch wheels, heated and cooled leather. Clean Car
VIN: 3GTUUEE83SG169350
Stock
UT69350
Engine
3.0L 6Cyl
Transmission
Automatic
Fuel Type
Diesel
65,325 km
Thomas Price
$65,995
Price does not include taxes and licensing fees.
View Details
Request More Info
Add to Compare
61,988 km
Thomas Price
$71,995
Price does not include taxes and licensing fees.
Add to Compare
2025 GMC Sierra 1500 AT4X
61,988 km
$71,995
Confirm Availability
Close
1 of 27
2025 GMC Sierra 1500 AT4X
Confirm Availability
Request Information
2025
GMC
Sierra 1500
AT4X
5.83ft
Box Length
VIN: 3GTUUFE84SG188981
Stock
UT88981
Engine
3.0L 6Cyl
Transmission
Automatic
Fuel Type
Diesel
61,988 km
Thomas Price
$71,995
Price does not include taxes and licensing fees.
View Details
Request More Info
Add to Compare
22,048 km
Thomas Price
$72,995
Price does not include taxes and licensing fees.
Add to Compare
2025 GMC Sierra 1500 Denali
22,048 km
$72,995
Confirm Availability
Close
1 of 23
2025 GMC Sierra 1500 Denali
Confirm Availability
Request Information
2025
GMC
Sierra 1500
Denali 3.0L Duramax Diesel, Navigation, Sunroof, Technology package, Clean Carfax, one Owner! ASK ABOUT CPO special finance rate
VIN: 3GTUUGE87SG183473
Stock
UT83473
Engine
3.0L 6Cyl
Transmission
Automatic
Fuel Type
Diesel
22,048 km
Thomas Price
$72,995
Price does not include taxes and licensing fees.
View Details
Request More Info
Add to Compare
51,736 km
Thomas Price
$68,995
Price does not include taxes and licensing fees.
Add to Compare
2025 GMC Sierra 1500 Denali
51,736 km
$68,995
Confirm Availability
Close
1 of 4
2025 GMC Sierra 1500 Denali
Confirm Availability
Request Information
2025
GMC
Sierra 1500
Denali
VIN: 3GTUUGE85SG182421
Stock
UT82421
Engine
3.0L 6Cyl
Transmission
Automatic
Fuel Type
Diesel
51,736 km
Thomas Price
$68,995
Price does not include taxes and licensing fees.
View Details
Request More Info
Add to Compare
15,029 km
Starting Price:
$56,995
Thomas Price
$54,995
Price does not include taxes and licensing fees.
Add to Compare
2025 GMC Sierra 1500 SLE
15,029 km
$54,995
Confirm Availability
Close
1 of 13
2025 GMC Sierra 1500 SLE
Confirm Availability
Request Information
2025
GMC
Sierra 1500
2025 SIERRA SLE CREW CAB 4x4 3.0L Duramax Diesel, X31 package, heated seats and steering wheel, 20 inch wheels, Clean Carfax!
VIN: 3GTUUBE85SG224573
Stock
UT24573
Engine
3.0L 6Cyl
Transmission
Automatic
Fuel Type
Diesel
15,029 km
Starting Price:
$56,995
Thomas Price
$54,995
Price does not include taxes and licensing fees.
View Details
Request More Info
Add to Compare
75,615 km
Thomas Price
$31,995
Price does not include taxes and licensing fees.
Add to Compare
2024 GMC Terrain Denali
75,615 km
$31,995
Confirm Availability
Close
1 of 18
2024 GMC Terrain Denali
Confirm Availability
Request Information
2024
GMC
Terrain
AWD
-
- Certified, Denali AWD, Sunroof, Nav, 19 inch wheels, Heated and cooled seats, Clean Carfax
VIN: 3GKALXEG8RL176020
Stock
UT76020
Engine
1.5L 4Cyl
Transmission
Automatic
Fuel Type
Gasoline
75,615 km
Thomas Price
$31,995
Price does not include taxes and licensing fees.
View Details
Request More Info
Add to Compare
37,159 km
Thomas Price
$34,995
Price does not include taxes and licensing fees.
Add to Compare
2024 GMC Terrain Denali
37,159 km
$34,995
Confirm Availability
Close
1 of 18
2024 GMC Terrain Denali
Confirm Availability
Request Information
2024
GMC
Terrain
Denali
AWD
VIN: 3GKALXEGXRL159302
Stock
UT59302
Engine
1.5L 4Cyl
Transmission
Automatic
Fuel Type
Gasoline
37,159 km
Thomas Price
$34,995
Price does not include taxes and licensing fees.
View Details
Request More Info
Add to Compare
16,264 km
Thomas Price
$50,995
Price does not include taxes and licensing fees.
Add to Compare
2024 GMC Sierra 1500 SLE
16,264 km
$50,995
Confirm Availability
Close
1 of 21
2024 GMC Sierra 1500 SLE
Confirm Availability
Request Information
2024
GMC
Sierra 1500
5.83ft
Box Length
-
- Low Mileage, SLE CREW CAB 4x4, 3.0L Duramax Diesel, Heated seats, Heated steering wheel, Chrome Steps, remote start, Clean Ca
VIN: 3GTUUBE81RG261534
Stock
UT61534
Engine
3.0L 6Cyl
Transmission
Automatic
Fuel Type
Diesel
16,264 km
Thomas Price
$50,995
Price does not include taxes and licensing fees.
View Details
Request More Info
Add to Compare
Request More Info
Request More Info
First Name
*
Last Name
*
Email
*
Phone
*
Message
Send me exclusive offers and promotions.
View disclaimer
.
If you are human, leave this field blank.
Submit
Book a Test Drive
Book a Test Drive
First Name
*
Last Name
*
Email
*
Phone
*
Preferred Contact Method
Email
Phone
Text/SMS
Best Time to Call
Anytime
Morning
Afternoon
Evening
Weekend
Preferred Appointment Date
Messages
Send me exclusive offers and promotions.
View disclaimer
.
If you are human, leave this field blank.
Submit