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Hours of Operation
Monday 9:00am - 7:00pm
Tuesday 9:00am - 7:00pm
Wednesday 9:00am - 7:00pm
Thursday 9:00am - 7:00pm
Friday 9:00am - 6:00pm
Saturday 9:00am - 3:00pm
Sunday Closed
Monday 7:30am - 5:30pm
Tuesday 7:30am - 5:30pm
Wednesday 7:30am - 5:30pm
Thursday 7:30am - 5:30pm
Friday 7:30am - 5:30pm
Saturday 7:30am - 12:00pm
Sunday Closed
Monday 7:30am - 5:30pm
Tuesday 7:30am - 5:30pm
Wednesday 7:30am - 5:30pm
Thursday 7:30am - 5:30pm
Friday 7:30am - 5:30pm
Saturday 7:30am - 12:00pm
Sunday Closed

New GMC Sierra 1500 for Sale in Cornwall

GMC (21)
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Pickup (21)
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Sierra 1500 (21)
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2020 GMC Sierra 1500 Denali (Stk: 20014) in Cornwall - Image 1 of 1

- Navigation - $443 B/W

Suggested Price:$73,837
Our Price: $71,837

Price does not include taxes and licensing fees.

Finance from $439*(Bi-weekly)
$70,837 x 84 Months @ 3.49% APR with $0 down payment. (3.5% Effective Rate,cost of borrowing $9,051).
Plus taxes and license.

Lease from $424*(Bi-weekly)
$71,837 x 48 Months @ 3.9% APR with $0 down payment. (estimated financing rate, cost of borrowing $8,531)
.
Plus taxes and license.

View Details
Body Style:Pickup
Engine:5.3L 8cyl
Exterior Colour:Black
Transmission:Automatic
Drivetrain:4x4
Stock #:20014
City:Cornwall
Seaway Chevrolet Cadillac Buick GMC
Navigation, Driver Alert Package II, Rear View Camera, GMC MultiPro Tailgate, Sunroof!

Hurry in, our year end Winter Clearout is on now! Take advantage of our best cash, lease, and finance promotions of the year.

With a taller height, better technology, and massive
.....Read More
2020 GMC Sierra 1500 Elevation (Stk: 20021) in Cornwall - Image 1 of 1

- BOX LINER - $359 B/W

Suggested Price:$60,377
Our Price: $58,377

Price does not include taxes and licensing fees.

Finance from $356*(Bi-weekly)
$57,377 x 84 Months @ 3.49% APR with $0 down payment. (3.49% Effective Rate,cost of borrowing $7,321).
Plus taxes and license.

Lease from $316*(Bi-weekly)
$58,377 x 48 Months @ 3.9% APR with $0 down payment. (estimated financing rate, cost of borrowing $7,174)
.
Plus taxes and license.

View Details
Body Style:Pickup
Engine:5.3L 8cyl
Exterior Colour:Black
Transmission:Automatic
Drivetrain:4x4
Stock #:20021
City:Cornwall
Seaway Chevrolet Cadillac Buick GMC
Elevation Value Package, Elevation Convenience Package, BOX LINER , Assist Steps!

Hurry in, our year end Winter Clearout is on now! Take advantage of our best cash, lease, and finance promotions of the year.

With a taller height, better technology, and massive power,
.....Read More
2020 GMC Sierra 1500 Elevation (Stk: 20024) in Cornwall - Image 1 of 1

- BOX LINER - $361 B/W

Suggested Price:$60,707
Our Price: $58,707

Price does not include taxes and licensing fees.

Finance from $358*(Bi-weekly)
$57,707 x 84 Months @ 3.49% APR with $0 down payment. (3.48% Effective Rate,cost of borrowing $7,364).
Plus taxes and license.

Lease from $318*(Bi-weekly)
$58,707 x 48 Months @ 3.9% APR with $0 down payment. (estimated financing rate, cost of borrowing $7,213)
.
Plus taxes and license.

View Details
Body Style:Pickup
Engine:5.3L 8cyl
Exterior Colour:Red
Transmission:Automatic
Drivetrain:4x4
Stock #:20024
City:Cornwall
Seaway Chevrolet Cadillac Buick GMC
Elevation Value Package, BOX LINER , Elevation Convenience Package, Assist Steps!

Hurry in, our year end Winter Clearout is on now! Take advantage of our best cash, lease, and finance promotions of the year.

Capable on road, relentless off road and completely composed
.....Read More
2020 GMC Sierra 1500 SLE (Stk: 20029) in Cornwall - Image 1 of 1

- Kodiak Edition - $348 B/W

Suggested Price:$58,652
Our Price: $56,652

Price does not include taxes and licensing fees.

Finance from $345*(Bi-weekly)
$55,652 x 84 Months @ 3.49% APR with $0 down payment. (3.5% Effective Rate,cost of borrowing $7,108).
Plus taxes and license.

Lease from $306*(Bi-weekly)
$56,652 x 48 Months @ 3.9% APR with $0 down payment. (estimated financing rate, cost of borrowing $6,968)
.
Plus taxes and license.

View Details
Body Style:Pickup
Engine:5.3L 8cyl
Exterior Colour:Other
Transmission:Automatic
Drivetrain:4x4
Stock #:20029
City:Cornwall
Seaway Chevrolet Cadillac Buick GMC
Kodiak Edition, 6 inch Chrome Assist Steps, Driver Alert Package I!

Hurry in, our year end Winter Clearout is on now! Take advantage of our best cash, lease, and finance promotions of the year.

Capable on road, relentless off road and completely composed when hauling a
.....Read More
2020 GMC Sierra 1500 AT4 (Stk: 20031) in Cornwall - Image 1 of 1

- $398 B/W

Suggested Price:$66,567
Our Price: $64,567

Price does not include taxes and licensing fees.

Finance from $394*(Bi-weekly)
$63,567 x 84 Months @ 3.49% APR with $0 down payment. (3.49% Effective Rate,cost of borrowing $8,121).
Plus taxes and license.

Lease from $374*(Bi-weekly)
$64,567 x 48 Months @ 3.9% APR with $0 down payment. (estimated financing rate, cost of borrowing $7,728)
.
Plus taxes and license.

View Details
Body Style:Pickup
Engine:5.3L 8cyl
Exterior Colour:White
Transmission:Automatic
Drivetrain:4x4
Stock #:20031
City:Cornwall
Seaway Chevrolet Cadillac Buick GMC
GMC MultiPro Tailgate, Rear View Camera, Spray-On Bed Liner, Assist Steps, SiriusXM!

Hurry in, our year end Winter Clearout is on now! Take advantage of our best cash, lease, and finance promotions of the year.

With elegant style and refinement that beautifully match
.....Read More
2020 GMC Sierra 1500 AT4 (Stk: 20028) in Cornwall - Image 1 of 1

- Navigation - $435 B/W

Suggested Price:$72,607
Our Price: $70,607

Price does not include taxes and licensing fees.

Finance from $431*(Bi-weekly)
$69,607 x 84 Months @ 3.49% APR with $0 down payment. (3.48% Effective Rate,cost of borrowing $8,903).
Plus taxes and license.

Lease from $410*(Bi-weekly)
$70,607 x 48 Months @ 3.9% APR with $0 down payment. (estimated financing rate, cost of borrowing $8,442)
.
Plus taxes and license.

View Details
Body Style:Pickup
Engine:6.2L 8cyl
Exterior Colour:Black
Transmission:Automatic
Drivetrain:4x4
Stock #:20028
City:Cornwall
Seaway Chevrolet Cadillac Buick GMC
Navigation, GMC MultiPro Tailgate, Rear View Camera, Wireless Charging, Bose Audio System!

Hurry in, our year end Winter Clearout is on now! Take advantage of our best cash, lease, and finance promotions of the year.

Sharper, more capable, intelligent, and innovative,
.....Read More
2020 GMC Sierra 1500 AT4 (Stk: 20050) in Cornwall - Image 1 of 1

- AT4 PREMIUM PKG - $472 B/W

Suggested Price:$78,652
Our Price: $76,652

Price does not include taxes and licensing fees.

Finance from $469*(Bi-weekly)
$75,652 x 84 Months @ 3.49% APR with $0 down payment. (3.48% Effective Rate,cost of borrowing $9,662).
Plus taxes and license.

Lease from $446*(Bi-weekly)
$76,652 x 48 Months @ 3.9% APR with $0 down payment. (estimated financing rate, cost of borrowing $9,157)
.
Plus taxes and license.

View Details
Body Style:Pickup
Engine:6.2L 8cyl
Exterior Colour:White
Transmission:Automatic
Drivetrain:4x4
Stock #:20050
City:Cornwall
Seaway Chevrolet Cadillac Buick GMC
AT4 PREMIUM PKG, Power Sliding Sunroof, 20 inch Aluminum Wheels, Tonneau Cover, Driver Alert Package !

Hurry in, our year end Winter Clearout is on now! Take advantage of our best cash, lease, and finance promotions of the year.

Capable on road, relentless off road and
.....Read More
2020 GMC Sierra 1500 Elevation (Stk: 20052) in Cornwall - Image 1 of 1

- Assist Steps - $347 B/W

Suggested Price:$58,339
Our Price: $56,339

Price does not include taxes and licensing fees.

Finance from $343*(Bi-weekly)
$55,339 x 84 Months @ 3.49% APR with $0 down payment. (3.51% Effective Rate,cost of borrowing $7,070).
Plus taxes and license.

Lease from $305*(Bi-weekly)
$56,339 x 48 Months @ 3.9% APR with $0 down payment. (estimated financing rate, cost of borrowing $6,924)
.
Plus taxes and license.

View Details
Body Style:Pickup
Engine:5.3L 8cyl
Exterior Colour:Red
Transmission:Automatic
Drivetrain:4x4
Stock #:20052
City:Cornwall
Seaway Chevrolet Cadillac Buick GMC
X31 Off Road Package, SPRAY ON BEDLINER, Assist Steps!

Hurry in, our year end Winter Clearout is on now! Take advantage of our best cash, lease, and finance promotions of the year.

With elegant style and refinement that beautifully match its brutal capability and
.....Read More
2020 GMC Sierra 1500 Denali (Stk: 20069) in Cornwall - Image 1 of 1

- SiriusXM - $439 B/W

Suggested Price:$73,202
Our Price: $71,202

Price does not include taxes and licensing fees.

Finance from $435*(Bi-weekly)
$70,202 x 84 Months @ 3.49% APR with $0 down payment. (3.48% Effective Rate,cost of borrowing $8,971).
Plus taxes and license.

Lease from $420*(Bi-weekly)
$71,202 x 48 Months @ 3.9% APR with $0 down payment. (estimated financing rate, cost of borrowing $8,458)
.
Plus taxes and license.

View Details
Body Style:Pickup
Engine:5.3L 8cyl
Exterior Colour:Dark Grey
Transmission:Automatic
Drivetrain:4x4
Stock #:20069
City:Cornwall
Seaway Chevrolet Cadillac Buick GMC
Power Sliding Sunroof, SiriusXM!

Hurry in, our year end Winter Clearout is on now! Take advantage of our best cash, lease, and finance promotions of the year.

Sharper, more capable, intelligent, and innovative, this 2020 GMC Sierra 1500 is unlike any truck you know.

.....Read More

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