Menu
Ernie Dean GM, ON / New Vehicles

New GMCs for sale in Alliston, ON

Saved
Recent
Sort by
Close

Request More Information

*Required fields
Purchase Price
$119,215
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
2026 GMC Sierra 2500HD in Silver for sale at Ernie Dean Chevrolet Buick GMC Ltd. in Alliston, ON
2026 GMC Sierra 2500HD AT4
AT4 PREMIUM PLUS PKG // 5TH WHEEL PREP // MULTI PRO TAILGATE STEP LIGHTS
VIN: 1GT4UPEY6TF201674
  • Body Style
    Truck
  • Engine
    6.6L 8Cyl
  • Exterior Colour
    Silver
  • Transmission
    Automatic
  • Drivetrain
    4×4
  • Stock
    18389
Purchase Price
$119,215
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
View Details
Request More Info
Retail Price + HST:
$134,201
  • Non-Stackable Cash Delivery Allowance (NSCDA) - CBG
    Required packages: 5SB
         -$3,000
Sale Price + HST
$131,201
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
Finance from
$846 bw
$134,201.00 x 84 months @ 3.99% APR with $0.00 down payment (4.72% effective rate, cost of borrowing $19,714.72). Plus HST and license.
Lease from
$998 bw
$134,201.00 x 48 months @ 8.5% APR with $0.00 down payment (20,000 km/yr lease allowance, 9.27% effective rate, cost of borrowing $34,643.64). Plus HST and licence.
2026 GMC Sierra 3500HD 4WD Crew Cab Standard Box Denali Ultimate in White for sale at Ernie Dean Chevrolet Buick GMC Ltd. in Alliston, ON
2026 GMC Sierra 3500HD Denali Ultimate
Confirm Availability
2026 GMC Sierra 3500HD Denali Ultimate
4WD Crew Cab Standard Box Denali Ultimate - FULL GRAIN LEATHER ALPINE UMBER // 5TH WHEEL PREP // HEATED AND VENTIALED SEATS
VIN: 1GT4UYEY9TF213551
  • Body Style
    Truck
  • Engine
    6.6L 8Cyl
  • Exterior Colour
    White
  • Transmission
    Automatic
  • Drivetrain
    4×4
  • Stock
    53621
Custom Badge Image
Retail Price + HST:
$134,201
  • Non-Stackable Cash Delivery Allowance (NSCDA) - CBG
    Required packages: 5SB
         -$3,000
Sale Price + HST
$131,201
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
Finance from
$846 bw
$134,201.00 x 84 months @ 3.99% APR with $0.00 down payment (4.72% effective rate, cost of borrowing $19,714.72). Plus HST and license.
Lease from
$998 bw
$134,201.00 x 48 months @ 8.5% APR with $0.00 down payment (20,000 km/yr lease allowance, 9.27% effective rate, cost of borrowing $34,643.64). Plus HST and licence.
View Details
Request More Info
Retail Price + HST:
$119,181
  • Non-Stackable Cash Delivery Allowance (NSCDA) - CBG
    Required packages: 4SB
         -$3,000
Sale Price + HST
$116,181
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
Finance from
$751 bw
$119,181.00 x 84 months @ 3.99% APR with $0.00 down payment (4.81% effective rate, cost of borrowing $17,508.22). Plus HST and license.
Lease from
$896 bw
$119,181.00 x 48 months @ 8.5% APR with $0.00 down payment (20,000 km/yr lease allowance, 9.38% effective rate, cost of borrowing $30,574.73). Plus HST and licence.
2026 GMC Sierra 3500HD 4WD Crew Cab Standard Box AT4 in White for sale at Ernie Dean Chevrolet Buick GMC Ltd. in Alliston, ON
2026 GMC Sierra 3500HD AT4
Confirm Availability
2026 GMC Sierra 3500HD AT4
4WD Crew Cab Standard Box AT4 - AT4 PREMIUM PLUS PKG // 5TH WHEEL PREP // HEADS UP DISPLAY
VIN: 1GT4UVEY1TF213736
  • Body Style
    Truck
  • Engine
    6.6L 8Cyl
  • Exterior Colour
    White
  • Transmission
    Automatic
  • Drivetrain
    4×4
  • Stock
    53619
Custom Badge Image
Retail Price + HST:
$119,181
  • Non-Stackable Cash Delivery Allowance (NSCDA) - CBG
    Required packages: 4SB
         -$3,000
Sale Price + HST
$116,181
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
Finance from
$751 bw
$119,181.00 x 84 months @ 3.99% APR with $0.00 down payment (4.81% effective rate, cost of borrowing $17,508.22). Plus HST and license.
Lease from
$896 bw
$119,181.00 x 48 months @ 8.5% APR with $0.00 down payment (20,000 km/yr lease allowance, 9.38% effective rate, cost of borrowing $30,574.73). Plus HST and licence.
View Details
Request More Info
Purchase Price
$67,956
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
2026 GMC Canyon Crew Cab Short Box 4-Wheel Drive Denali in White for sale at Ernie Dean Chevrolet Buick GMC Ltd. in Alliston, ON
2026 GMC Canyon 4WD Denali
Confirm Availability
2026 GMC Canyon 4WD Denali
5.14ft Box Length
VIN: 1GTP2FEK9T1177523
City: 17MPG • Hwy: 21MPG
  • Body Style
    Truck
  • Engine
    2.7L 4Cyl
  • Exterior Colour
    White
  • Transmission
    Automatic
  • Drivetrain
    4×4
  • Stock
    53610
Custom Badge Image
Purchase Price
$67,956
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
View Details
Request More Info
Retail Price + HST:
$128,796
  • Non-Stackable Cash Delivery Allowance (NSCDA) - CBG
    Required packages: 5SA&DZW
         -$3,000
Sale Price + HST
$125,796
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
Finance from
$812 bw
$128,796.00 x 84 months @ 3.99% APR with $0.00 down payment (4.75% effective rate, cost of borrowing $18,920.70). Plus HST and license.
Lease from
$938 bw
$128,796.00 x 48 months @ 8.5% APR with $0.00 down payment (20,000 km/yr lease allowance, 9.3% effective rate, cost of borrowing $33,647.51). Plus HST and licence.
2026 GMC Sierra 3500HD 4WD Crew Cab Long Box Denali in White for sale at Ernie Dean Chevrolet Buick GMC Ltd. in Alliston, ON
2026 GMC Sierra 3500HD Denali
Confirm Availability
2026 GMC Sierra 3500HD Denali
4WD Crew Cab Long Box Denali - DENALI RESERVE PKG // 5TH WHEEL PREP // BLACK BADGING PKG
VIN: 1GT4UWEY1TF211605
  • Body Style
    Truck
  • Engine
    6.6L 8Cyl
  • Exterior Colour
    White
  • Transmission
    Automatic
  • Drivetrain
    4×4
  • Stock
    53608
Custom Badge Image
Retail Price + HST:
$128,796
  • Non-Stackable Cash Delivery Allowance (NSCDA) - CBG
    Required packages: 5SA&DZW
         -$3,000
Sale Price + HST
$125,796
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
Finance from
$812 bw
$128,796.00 x 84 months @ 3.99% APR with $0.00 down payment (4.75% effective rate, cost of borrowing $18,920.70). Plus HST and license.
Lease from
$938 bw
$128,796.00 x 48 months @ 8.5% APR with $0.00 down payment (20,000 km/yr lease allowance, 9.3% effective rate, cost of borrowing $33,647.51). Plus HST and licence.
View Details
Request More Info
Retail Price + HST:
$81,841
  • Non-Stackable Cash Delivery Allowance (NSCDA) - CBG
    Required packages: 1SA
         -$3,000
Sale Price + HST
$78,841
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
Finance from
$516 bw
$81,841.00 x 84 months @ 3.99% APR with $0.00 down payment (5.17% effective rate, cost of borrowing $12,022.80). Plus HST and license.
2026 GMC Sierra 2500HD Crew Cab Standard Box 4-Wheel Drive Pro in White for sale at Ernie Dean Chevrolet Buick GMC Ltd. in Alliston, ON
2026 GMC Sierra 2500HD Pro
Confirm Availability
2026 GMC Sierra 2500HD Pro
Crew Cab Standard Box 4-Wheel Drive Pro - CONVENIENCE PKG // ASSIST STEPS // SPRAY BED LINER
VIN: 1GT4ULE77TF209069
  • Body Style
    Truck
  • Engine
    6.6L 8Cyl
  • Exterior Colour
    White
  • Transmission
    Automatic
  • Drivetrain
    4×4
  • Stock
    53609
Custom Badge Image
Retail Price + HST:
$81,841
  • Non-Stackable Cash Delivery Allowance (NSCDA) - CBG
    Required packages: 1SA
         -$3,000
Sale Price + HST
$78,841
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
Finance from
$516 bw
$81,841.00 x 84 months @ 3.99% APR with $0.00 down payment (5.17% effective rate, cost of borrowing $12,022.80). Plus HST and license.
View Details
Request More Info
Purchase Price
$69,486
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
Finance from
$450 bw
$69,486.00 x 84 months @ 4.79% APR with $0.00 down payment (4.85% effective rate, cost of borrowing $12,362.51). Plus HST and license.
Lease from
$492 bw
$69,486.00 x 48 months @ 6.9% APR with $0.00 down payment (16,000 km/yr lease allowance, estimated lease rate, cost of borrowing $14,377.29). Plus HST and licence.
2026 GMC Acadia AWD AT4 in Black for sale at Ernie Dean Chevrolet Buick GMC Ltd. in Alliston, ON
2026 GMC Acadia AT4
Confirm Availability
2026 GMC Acadia AT4
AWD AT4
VIN: 1GKENPKS2TJ265696
City: 12.1L/100 km • Hwy: 10.1L/100 km
  • Body Style
    SUV
  • Engine
    2.5L 4Cyl
  • Exterior Colour
    Black
  • Transmission
    Automatic
  • Drivetrain
    AWD
  • Stock
    53611
Custom Badge Image
Purchase Price
$69,486
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
Finance from
$450 bw
$69,486.00 x 84 months @ 4.79% APR with $0.00 down payment (4.85% effective rate, cost of borrowing $12,362.51). Plus HST and license.
Lease from
$492 bw
$69,486.00 x 48 months @ 6.9% APR with $0.00 down payment (16,000 km/yr lease allowance, estimated lease rate, cost of borrowing $14,377.29). Plus HST and licence.
View Details
Request More Info
Retail Price + HST:
$92,956
  • Non-Stackable Cash Delivery Allowance (NSCDA) - CBG
    Required packages: 4SB
         -$5,000
Sale Price + HST
$87,956
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
Finance from
$566 bw
$92,956.00 x 84 months @ 2.99% APR with $0.00 down payment (4.69% effective rate, cost of borrowing $10,120.18). Plus HST and license.
Lease from
$546 bw
$92,956.00 x 48 months @ 3.9% APR with $0.00 down payment (16,000 km/yr lease allowance, 5.86% effective rate, cost of borrowing $11,058.02). Plus HST and licence.
2026 GMC Sierra 1500 Crew Cab Short Box 4-Wheel Drive AT4 in Silver for sale at Ernie Dean Chevrolet Buick GMC Ltd. in Alliston, ON
2026 GMC Sierra 1500 AT4
Confirm Availability
2026 GMC Sierra 1500 AT4
Crew Cab Short Box 4-Wheel Drive AT4 - AT4 PREMIUM PLUS PKG // SUNROOF // 3.0L DIESEL
VIN: 3GTUUEE8XTG153650
City: 10.7L/100 km • Hwy: 9.3L/100 km
  • Body Style
    Truck
  • Engine
    3.0L 6Cyl
  • Exterior Colour
    Silver
  • Transmission
    Automatic
  • Drivetrain
    4×4
  • Stock
    53573
Custom Badge Image

Dean’s Truck Month is Here Plus up to $3500 Truck Trade in Bonus**
Retail Price + HST:
$92,956
  • Non-Stackable Cash Delivery Allowance (NSCDA) - CBG
    Required packages: 4SB
         -$5,000
Sale Price + HST
$87,956
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
Finance from
$566 bw
$92,956.00 x 84 months @ 2.99% APR with $0.00 down payment (4.69% effective rate, cost of borrowing $10,120.18). Plus HST and license.
Lease from
$546 bw
$92,956.00 x 48 months @ 3.9% APR with $0.00 down payment (16,000 km/yr lease allowance, 5.86% effective rate, cost of borrowing $11,058.02). Plus HST and licence.
View Details
Request More Info
Retail Price + HST:
$91,875
  • Non-Stackable Cash Delivery Allowance (NSCDA) - CBG
    Required packages: 4SB
         -$5,000
Sale Price + HST
$86,875
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
Finance from
$560 bw
$91,875.00 x 84 months @ 2.99% APR with $0.00 down payment (4.71% effective rate, cost of borrowing $10,002.49). Plus HST and license.
Lease from
$540 bw
$91,875.00 x 48 months @ 3.9% APR with $0.00 down payment (16,000 km/yr lease allowance, 5.88% effective rate, cost of borrowing $10,929.11). Plus HST and licence.
2026 GMC Sierra 1500 Crew Cab Short Box 4-Wheel Drive AT4 in Silver for sale at Ernie Dean Chevrolet Buick GMC Ltd. in Alliston, ON
2026 GMC Sierra 1500 AT4
Confirm Availability
2026 GMC Sierra 1500 AT4
Crew Cab Short Box 4-Wheel Drive AT4 - 3.0L DIESEL // AT4 PREFERRED PKG // SUNROOF // REAR SLIDING WINDOW
VIN: 3GTUUEE86TG255995
City: 10.7L/100 km • Hwy: 9.3L/100 km
  • Body Style
    Truck
  • Engine
    3.0L 6Cyl
  • Exterior Colour
    Silver
  • Transmission
    Automatic
  • Drivetrain
    4×4
  • Stock
    53587
Custom Badge Image

Dean’s Truck Month is Here Plus up to $3500 Truck Trade in Bonus**
Retail Price + HST:
$91,875
  • Non-Stackable Cash Delivery Allowance (NSCDA) - CBG
    Required packages: 4SB
         -$5,000
Sale Price + HST
$86,875
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
Finance from
$560 bw
$91,875.00 x 84 months @ 2.99% APR with $0.00 down payment (4.71% effective rate, cost of borrowing $10,002.49). Plus HST and license.
Lease from
$540 bw
$91,875.00 x 48 months @ 3.9% APR with $0.00 down payment (16,000 km/yr lease allowance, 5.88% effective rate, cost of borrowing $10,929.11). Plus HST and licence.
View Details
Request More Info
Retail Price + HST:
$85,331
  • Non-Stackable Cash Delivery Allowance (NSCDA) - CBG
    Required packages: 3SB
         -$5,000
Sale Price + HST
$80,331
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
Finance from
$520 bw
$85,331.00 x 84 months @ 2.99% APR with $0.00 down payment (4.85% effective rate, cost of borrowing $9,290.04). Plus HST and license.
Lease from
$449 bw
$85,331.00 x 48 months @ 3.9% APR with $0.00 down payment (16,000 km/yr lease allowance, 5.95% effective rate, cost of borrowing $10,593.00). Plus HST and licence.
2026 GMC Sierra 1500 Crew Cab Short Box 4-Wheel Drive Elevation in Red for sale at Ernie Dean Chevrolet Buick GMC Ltd. in Alliston, ON
2026 GMC Sierra 1500 Elevation
Confirm Availability
2026 GMC Sierra 1500 Elevation
Crew Cab Short Box 4-Wheel Drive Elevation - SUNROOF // LEATHER // 6" BLACK ASSIST STEPS // ELEVATION PREMIUM PKG
VIN: 3GTUUCED8TG255367
City: 14.2L/100 km • Hwy: 12.9L/100 km
  • Body Style
    Truck
  • Engine
    5.3L 8Cyl
  • Exterior Colour
    Red
  • Transmission
    Automatic
  • Drivetrain
    4×4
  • Stock
    53579
Custom Badge Image

Dean’s Truck Month is Here Plus up to $3500 Truck Trade in Bonus**
Retail Price + HST:
$85,331
  • Non-Stackable Cash Delivery Allowance (NSCDA) - CBG
    Required packages: 3SB
         -$5,000
Sale Price + HST
$80,331
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
Finance from
$520 bw
$85,331.00 x 84 months @ 2.99% APR with $0.00 down payment (4.85% effective rate, cost of borrowing $9,290.04). Plus HST and license.
Lease from
$449 bw
$85,331.00 x 48 months @ 3.9% APR with $0.00 down payment (16,000 km/yr lease allowance, 5.95% effective rate, cost of borrowing $10,593.00). Plus HST and licence.
View Details
Request More Info
Retail Price + HST:
$133,511
  • Non-Stackable Cash Delivery Allowance (NSCDA) - CBG
    Required packages: 5SB
         -$3,000
Sale Price + HST
$130,511
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
Finance from
$841 bw
$133,511.00 x 84 months @ 3.99% APR with $0.00 down payment (4.73% effective rate, cost of borrowing $19,613.36). Plus HST and license.
Lease from
$983 bw
$133,511.00 x 48 months @ 8.5% APR with $0.00 down payment (20,000 km/yr lease allowance, 9.27% effective rate, cost of borrowing $34,673.28). Plus HST and licence.
2026 GMC Sierra 2500HD Crew Cab Standard Box 4-Wheel Drive Denali Ultimate in White for sale at Ernie Dean Chevrolet Buick GMC Ltd. in Alliston, ON
2026 GMC Sierra 2500HD Denali Ultimate
Confirm Availability
2026 GMC Sierra 2500HD Denali Ultimate
Crew Cab Standard Box 4-Wheel Drive Denali Ultimate - BLACK BADGING PKG // 5HT WHEEL PREP // FLOOR LINERS
VIN: 1GT4UXEY9TF208036
  • Body Style
    Truck
  • Engine
    6.6L 8Cyl
  • Exterior Colour
    White
  • Transmission
    Automatic
  • Drivetrain
    4×4
  • Stock
    53586
Custom Badge Image
Retail Price + HST:
$133,511
  • Non-Stackable Cash Delivery Allowance (NSCDA) - CBG
    Required packages: 5SB
         -$3,000
Sale Price + HST
$130,511
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
Finance from
$841 bw
$133,511.00 x 84 months @ 3.99% APR with $0.00 down payment (4.73% effective rate, cost of borrowing $19,613.36). Plus HST and license.
Lease from
$983 bw
$133,511.00 x 48 months @ 8.5% APR with $0.00 down payment (20,000 km/yr lease allowance, 9.27% effective rate, cost of borrowing $34,673.28). Plus HST and licence.
View Details
Request More Info
Purchase Price
$42,971
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
Finance from
$271 bw
$42,971.00 x 84 months @ 3.99% APR with $0.00 down payment (4.04% effective rate, cost of borrowing $6,312.63). Plus HST and license.
Lease from
$258 bw
$42,971.00 x 48 months @ 3.9% APR with $0.00 down payment (16,000 km/yr lease allowance, estimated lease rate, cost of borrowing $5,065.58). Plus HST and licence.
2026 GMC Terrain AWD Elevation in White for sale at Ernie Dean Chevrolet Buick GMC Ltd. in Alliston, ON
2026 GMC Terrain AWD Elevation
Confirm Availability
2026 GMC Terrain AWD Elevation
AWD Elevation
VIN: 3GKALUEG3TL393237
City: 9.9L/100 km • Hwy: 8.5L/100 km
  • Body Style
    SUV
  • Engine
    1.5L 4Cyl
  • Exterior Colour
    White
  • Transmission
    Automatic
  • Drivetrain
    AWD
  • Stock
    53532
Custom Badge Image

Introducing the 2026 GMC Terrain AWD Elevation in a striking white exterior, offering reliable all-wheel drive and remarkable handling for superior traction on any surface. This SUV perfectly balances rugged capability with sophisticated style.

Step inside to a beautifully appointed interior highlighted by a soothing blue color scheme. The spacious cabin is accentuated by soft-touch materials and cutting-edge features like air conditioning and power windows. Alloy wheels and modern design lines enhance the Terrain's commanding presence.

Advanced technology like a backup camera, Bluetooth connection, and a comprehensive navigation system with smart device integration keep you connected and in control on every journey. Safety is paramount, with features such as brake assist, lane assist, and adaptive cruise control providing peace of mind. The inclusion of parking sensors and a plethora of driver assistance tools ensure effortless maneuverability and a safer driving experience.

Perfect for the modern family or the tech-savvy individual, the Terrain AWD Elevation offers a blend of comfort, safety, and innovation that stands out. Visit our dealership to experience the 2026 GMC Terrain in person. Reach out today for more information and let us help you drive home in style.
Purchase Price
$42,971
Price does not include taxes and licensing fees. Dean Discount not compatible with GM employee and preferred pricing programs.
Finance from
$271 bw
$42,971.00 x 84 months @ 3.99% APR with $0.00 down payment (4.04% effective rate, cost of borrowing $6,312.63). Plus HST and license.
Lease from
$258 bw
$42,971.00 x 48 months @ 3.9% APR with $0.00 down payment (16,000 km/yr lease allowance, estimated lease rate, cost of borrowing $5,065.58). Plus HST and licence.
View Details
Request More Info
Request More Info

Request More Info