2026 GMC Sierra 1500 For Sale

Prices starting at: $38,300

View photos, watch videos and get a quote on a new 2026 GMC Sierra 1500 in Collinsville, OK.

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2026 GMC Sierra 1500 Truck

2026 GMC Sierra 1500 Truck Woodland Green

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Learn More About Buying a 2026 GMC Sierra 1500 in Collinsville

Visit Mark Allen Buick GMC for a great deal on a new 2026 GMC Sierra 1500. Our sales team is ready to show you all of the features that you will find in the GMC Sierra 1500 and take you for a test drive in the Collinsville Area. At our GMC dealership you will find competitive prices, a stocked inventory of 2026 GMC Sierra 1500 cars and a helpful sales team. Stop by our car dealership today and take a 2026 GMC for a spin.

2026 GMC Sierra 1500 Truck

2026 GMC Sierra 1500 AT4

MSRP$75,655
Dealer Discount$4,136
Sale Price$71,519
Mark Allen Protection Plan$1,499
Doc Fee$489
Offers$4,000
Final Price$69,507

Engine: 6.2L EcoTec3 V8 engine, Transmission: Automatic, Exterior Color: Sterling Metallic, Interior Color: Jet Black with Kalahari accents, Perforated leathe

2026 GMC Sierra 1500 Truck

2026 GMC Sierra 1500 AT4

MSRP$75,155
Dealer Discount$4,122
Sale Price$71,033
Mark Allen Protection Plan$36,954
Doc Fee$489
Offers$4,000
Final Price$104,476

Engine: 6.2L EcoTec3 V8 engine, Transmission: Automatic, Exterior Color: Summit White, Interior Color: Jet Black with Kalahari accents, Perforated leathe

2026 GMC Sierra 1500 Truck

2026 GMC Sierra 1500 AT4

MSRP$75,155
Dealer Discount$4,122
Sale Price$71,033
Mark Allen Protection Plan$55,147
Doc Fee$489
Offers$4,000
Final Price$122,669

Engine: 6.2L EcoTec3 V8 engine, Transmission: Automatic, Exterior Color: Summit White, Interior Color: Jet Black with Kalahari accents, Perforated leathe

2026 GMC Sierra 1500 Truck

2026 GMC Sierra 1500 AT4

MSRP$74,855
Dealer Discount$4,064
Sale Price$70,791
Mark Allen Protection Plan$1,499
Doc Fee$489
Offers$3,000
Final Price$69,779

Engine: 3.0L Duramax^® Turbo Diesel engine, Transmission: Automatic, Exterior Color: Onyx Black, Interior Color: Jet Black with Kalahari accents, Perforated leathe

2026 GMC Sierra 1500 AT4

MSRP$76,744
Dealer Discount$4,265
Sale Price$72,479
Mark Allen Protection Plan$1,499
Doc Fee$489
Offers$4,000
Final Price$70,467

Engine: 6.2L EcoTec3 V8 engine, Transmission: Automatic, Exterior Color: Summit White, Interior Color: Jet Black with Kalahari accents, Perforated leathe

2026 GMC Sierra 1500 AT4

MSRP$75,650
Dealer Discount$4,166
Sale Price$71,484
Mark Allen Protection Plan$36,954
Doc Fee$489
Offers$4,000
Final Price$104,927

Engine: 6.2L EcoTec3 V8 engine, Transmission: Automatic, Exterior Color: Coastal Dune, Interior Color: Jet Black with Kalahari accents, Perforated leathe

2026 GMC Sierra 1500 Denali

MSRP$75,760
Dealer Discount$4,102
Sale Price$71,658
Mark Allen Protection Plan$1,499
Doc Fee$489
Offers$4,000
Final Price$69,646

Engine: 5.3L EcoTec3 V8 engine, Transmission: Automatic, Exterior Color: Glacier White Tricoat, Interior Color: Jet Black, Forge perforated leather seat trim

2026 GMC Sierra 1500 Denali

MSRP$75,160
Dealer Discount$4,048
Sale Price$71,112
Mark Allen Protection Plan$1,499
Doc Fee$489
Offers$4,000
Final Price$69,100

Engine: 5.3L EcoTec3 V8 engine, Transmission: Automatic, Exterior Color: Sterling Metallic, Interior Color: Jet Black, Forge perforated leather seat trim

2026 GMC Sierra 1500 Denali

MSRP$78,445
Dealer Discount$4,314
Sale Price$74,131
Mark Allen Protection Plan$1,499
Doc Fee$489
Offers$4,000
Final Price$72,119

Engine: 6.2L EcoTec3 V8 engine, Transmission: Automatic, Exterior Color: Onyx Black, Interior Color: Jet Black, Forge perforated leather seat trim

2026 GMC Sierra 1500 Denali

MSRP$77,385
Dealer Discount$4,248
Sale Price$73,137
Mark Allen Protection Plan$1,499
Doc Fee$489
Offers$3,000
Final Price$72,125

Engine: 3.0L Duramax^® Turbo Diesel engine, Transmission: Automatic, Exterior Color: Sterling Metallic, Interior Color: Atmosphere/Brownstone, Forge perforated leather se

View All New GMC Sierra 1500

2025 GMC Sierra 1500 AT4

Price$53,210
Doc Fee$489
Final Price$53,699

Engine: 3.0L I-6 cyl, Transmission: Automatic, Mileage: 14,790 miles, Exterior Color: Summit White, Interior Color: Jet Black

2025 GMC Sierra 1500 AT4

Price$51,740
Doc Fee$489
Final Price$52,229

Engine: 6.2L V-8 cyl, Transmission: Automatic, Mileage: 30,048 miles, Exterior Color: Summit White, Interior Color: Jet Black

2025 GMC Sierra 1500 AT4

Price$53,760
Doc Fee$489
Final Price$54,249

Engine: 3.0L I-6 cyl, Transmission: Automatic, Mileage: 21,579 miles, Exterior Color: Volcanic Red Tintcoat, Interior Color: Jet Black

2024 GMC Sierra 1500 AT4

Price$47,640
Doc Fee$489
Final Price$48,129

Engine: 3.0L I-6 cyl, Transmission: Automatic, Mileage: 47,523 miles, Exterior Color: Thunderstorm Gray, Interior Color: Jet Black with Kalahari accents, Perforated leathe

2020 GMC Sierra 1500 AT4

Price$32,460
Doc Fee$489
Final Price$32,949

Engine: 6.2L V-8 cyl, Transmission: Automatic, Mileage: 110,358 miles, Exterior Color: Satin Steel, Interior Color: Jet Black

2020 GMC Sierra 1500 AT4

Price$32,540
Doc Fee$489
Final Price$33,029

Engine: 3.0L I-6 cyl, Transmission: Automatic, Mileage: 93,510 miles, Exterior Color: Onyx Black, Interior Color: Jet Black

2023 GMC Sierra 1500 AT4X

Price$58,240
Doc Fee$489
Final Price$58,729

Engine: 6.2L V-8 cyl, Transmission: Automatic, Mileage: 16,592 miles, Exterior Color: Volcanic Red Tintcoat, Interior Color: Obsidian Rush

2023 GMC Sierra 1500 Denali Ultimate

Price$49,520
Doc Fee$489
Final Price$50,009

Engine: 6.2L V-8 cyl, Transmission: Automatic, Mileage: 58,942 miles, Exterior Color: Sterling, Interior Color: Alpine Umber

2023 GMC Sierra 1500 Denali Ultimate

Price$44,760
Doc Fee$489
Final Price$45,249

Engine: 6.2L V-8 cyl, Transmission: Automatic, Mileage: 102,452 miles, Exterior Color: Onyx Black, Interior Color: Alpine Umber

2024 GMC Sierra 1500 Elevation w/3SB

Price$33,870
Doc Fee$489
Final Price$34,359

Engine: 5.3L V-8 cyl, Transmission: Automatic, Mileage: 97,305 miles, Exterior Color: Cardinal Red, Interior Color: Jet Black, Cloth seat trim

View All Pre-Owned GMC Sierra 1500

GMC (1)

Sierra 1500 Truck (13)

2026

Manufacturer Offer

No Monthly Payments Until Next Year for Well-Qualified Buyers When Financed w/ GM Financial

0.0% APR for 36 months
0.0% APR for 48 months
0.0% APR for 60 months
2.9% APR for 72 months

Applies to this new 2026 GMC Sierra 1500

Offer only valid Oct 01, 2026 through Nov 02, 2026

No Monthly Payments Until Next Year for Well-Qualified Buyers When Financed w/ GM Financial

Disclaimer(s)

Deferred monthly payments until 2027. Finance charges accrue from date of financing. Must finance with GM Financial. Down payment required at signing, if applicable. Offer not available in PA. Some customers may not qualify. Not available with lease and some other offers. 0.0% APR for 60 months for well-qualified buyers when financed w/GM Financial. Monthly payment is $16.67 for every $1000 you finance. Average example down payment is 10.0%. This is a standalone APR incentive program and not available with lease and some other offers. Must take new retail delivery by 11/02/2026. Truth in Lending Act Disclosure: Down payment will vary with APR and credit. For example, 0.0% APR with $2,500 down payment provides for 60 monthly payments of $16.67 per $1000 financed for qualified buyers. 0.0% APR for a term of 36 months corresponds to a monthly cost of $27.78 per $1000 financed. 0.0% APR for a term of 48 months corresponds to a monthly cost of $20.83 per $1000 financed. 2.9% APR for a term of 72 months corresponds to a monthly cost of $15.15 per $1000 financed. The rates described are for estimation purposes only; you may not be able to finance at this rate. (See Trims)
See State Disclaimer *

Manufacturer Offer

No Monthly Payments Until Next Year for Well-Qualified Buyers When Financed w/ GM Financial

0.0% APR for 36 months
0.0% APR for 48 months
0.0% APR for 60 months
2.9% APR for 72 months

Applies to this new 2026 GMC Sierra 1500

Offer only valid Sep 30, 2026 through Nov 02, 2026

No Monthly Payments Until Next Year for Well-Qualified Buyers When Financed w/ GM Financial

Disclaimer(s)

Deferred monthly payments until 2027. Finance charges accrue from date of financing. Must finance with GM Financial. Down payment required at signing, if applicable. Offer not available in PA. Some customers may not qualify. Not available with lease and some other offers. 0.0% APR for 60 months for well-qualified buyers when financed w/GM Financial. Monthly payment is $16.67 for every $1000 you finance. Average example down payment is 10.0%. This is a standalone APR incentive program and not available with lease and some other offers. Must take new retail delivery by 11/02/2026. Truth in Lending Act Disclosure: Down payment will vary with APR and credit. For example, 0.0% APR with $2,500 down payment provides for 60 monthly payments of $16.67 per $1000 financed for qualified buyers. 0.0% APR for a term of 36 months corresponds to a monthly cost of $27.78 per $1000 financed. 0.0% APR for a term of 48 months corresponds to a monthly cost of $20.83 per $1000 financed. 2.9% APR for a term of 72 months corresponds to a monthly cost of $15.15 per $1000 financed. The rates described are for estimation purposes only; you may not be able to finance at this rate. (See Trims)
See State Disclaimer *

Manufacturer Offer

No Monthly Payments Until Next Year for Well-Qualified Buyers When Financed w/ GM Financial

Applies to this new 2026 GMC Sierra 1500

Offer only valid Oct 01, 2026 through Nov 02, 2026

No Monthly Payments Until Next Year for Well-Qualified Buyers When Financed w/ GM Financial

Disclaimer(s)

Deferred monthly payments until 2027. Finance charges accrue from date of financing. Must finance with GM Financial. Down payment required at signing, if applicable. Offer not available in PA. Some customers may not qualify. Not available with lease and some other offers. 6.9% APR for 84 months for well-qualified buyers when financed w/GM Financial. Monthly payment is $15.04 for every $1000 you finance. Average example down payment is 10.0%. This is a standalone APR incentive program and not available with lease and some other offers. Must take new retail delivery by 11/02/2026. Truth in Lending Act Disclosure: Down payment will vary with APR and credit. For example, 6.9% APR with $2,500 down payment provides for 84 monthly payments of $15.04 per $1000 financed for qualified buyers. 6.9% APR for a term of 75 months corresponds to a monthly cost of $16.45 per $1000 financed. The rates described are for estimation purposes only; you may not be able to finance at this rate. (See Trims)
See State Disclaimer *

Manufacturer Offer

No Monthly Payments Until Next Year for Well-Qualified Buyers When Financed w/ GM Financial

Applies to this new 2026 GMC Sierra 1500

Offer only valid Sep 30, 2026 through Nov 02, 2026

No Monthly Payments Until Next Year for Well-Qualified Buyers When Financed w/ GM Financial

Disclaimer(s)

Deferred monthly payments until 2027. Finance charges accrue from date of financing. Must finance with GM Financial. Down payment required at signing, if applicable. Offer not available in PA. Some customers may not qualify. Not available with lease and some other offers. APR for for well-qualified buyers when financed w/GM Financial. Monthly payment is for every $1000 you finance. Average example down payment is . Not available with leases and some other offers. Must take new retail delivery by 11/02/2026. Truth in Lending Act Disclosure: Down payment will vary with APR and credit. For example, 6.9% APR with $2,500 down payment provides for 84 monthly payments of $15.04 per $1000 financed for qualified buyers. 6.9% APR for a term of 75 months corresponds to a monthly cost of $16.45 per $1000 financed. The rates described are for estimation purposes only; you may not be able to finance at this rate. (See Trims)
See State Disclaimer *

Manufacturer Offer

Bonus Cash

$2,500 Cash

Applies to this new 2026 GMC Sierra 1500

Offer only valid Sep 30, 2026 through Nov 02, 2026

Disclaimer(s)

Not available with some other offers. Must take new retail delivery by 11/02/2026. (See Trims)
See State Disclaimer *

Manufacturer Offer

Bonus Cash

$1,750 Cash

Applies to this new 2026 GMC Sierra 1500

Offer only valid Sep 30, 2026 through Nov 02, 2026

Disclaimer(s)

Not available with some other offers. Must take new retail delivery by 11/02/2026. (See Trims)
See State Disclaimer *

Manufacturer Offer

Purchase Allowance

$1,500 Cash

Applies to this new 2026 GMC Sierra 1500

Offer only valid Sep 30, 2026 through Nov 02, 2026

Disclaimer(s)

Not available with special financing, lease and some other offers. Must take new retail delivery by 11/02/2026. (See Trims)
See State Disclaimer *

Manufacturer Offer

Bonus Cash

$1,500 Cash

Applies to this new 2026 GMC Sierra 1500

Offer only valid Sep 30, 2026 through Nov 02, 2026

Disclaimer(s)

Not available with some other offers. Must take new retail delivery by 11/02/2026. (See Trims)
See State Disclaimer *

Manufacturer Offer

Bonus Cash

$1,000 Cash

Applies to this new 2026 GMC Sierra 1500

Offer only valid Oct 01, 2026 through Nov 02, 2026

Disclaimer(s)

Not available with some other offers. Must take new retail delivery by 11/02/2026. (See Trims)
See State Disclaimer *

Manufacturer Offer

Bonus Cash

$500 Cash

Applies to this new 2026 GMC Sierra 1500

Offer only valid Sep 30, 2026 through Nov 02, 2026

Disclaimer(s)

Not available with some other offers. Must take new retail delivery by 11/02/2026. (See Trims)
See State Disclaimer *

Manufacturer Offer

SCR GMC Lease

Applies to this new 2026 GMC Sierra 1500.

Offer only valid Oct 01, 2026 through Nov 02, 2026

Ultra Low-Mileage Lease for Well-Qualified Lessees. $349/month for 24 months. For Everyone: $7,679 due at signing (after all offers).* $0 security deposit. For Current Lessees of 2021 model year or newer select GM vehicles : $5,429 due at signing (after all offers).** $0 security deposit. Tax, title, license, and dealer fees extra. Mileage charge of $0.25/mile over 20,000 miles at participating dealers.

Disclaimer(s)

*Example based on survey. Each dealer sets own price. $349/month for 24 months. Your payments may vary. Payments are for a 2026 GMC Sierra 1500 Short Box Crew Cab 4WD Elevation w/5.3L EcoTec3 V8 with an MSRP of $60,990. Based on due at signing amount of $7,679 (after all offers). 24 monthly payments total $8,376. Option to purchase at lease end for an amount to be determined at lease signing. Lessor must approve lease. Take new retail delivery by 11-02-2026. Lessee pays for maintenance, repair, excess wear and disposition fee of $495 or less at end of lease. No security deposit required. Payments may be higher in some states. Not available with other offers. **For Current Lessees of 2021 model year or newer Buick and GMC vehicles at least 30 days prior to the lease of a new GM vehicle through GM Financial : Payments are based on an MSRP of $60,990. Based on due at signing amount of $5,429 (after all offers). 24 monthly payments total $8,376. Must show proof of lease. Option to purchase at lease end for an amount to be determined at lease signing. Lessor must approve lease. Take new retail delivery by 11-02-2026. Lessee pays for maintenance, repair, excess wear and disposition fee of $495 or less at end of lease. No security deposit required. Payments may be higher in some states. Not available with other offers. (See Trims)
See State Disclaimer *

Manufacturer Offer

GM First Responder Offer

$500 Offer

Applies to this new 2026 GMC Sierra 1500

Offer only valid Jan 03, 2026 through Jan 04, 2027

Disclaimer(s)

Must be a current Firefighter, Police, EMT/Paramedic, or 911 Dispatcher. First Responders employed by federal, state or municipal governments may be subject to restrictions that limit their ability to accept this offer. Accordingly, this offer is void unless permitted by applicable federal, state and municipal laws, regulations, rules, ordinances, policies, codes of conduct, and other directives or standards regarding ethics and gift acceptance by the applicable federal, state or municipal employees. By accepting this offer, you verify that doing so complies with all laws, regulations, policies or other restrictions regarding ethics or gift acceptance that apply to you. Eligible participants are able to sponsor their spouse. At participating dealers only. Visit gmfirstresponderappreciation.com for program eligibility details and for a list of eligible vehicles. Not available with some other offers. Must provide authorization number to participating dealer prior to or at time of vehicle delivery to receive offer. Must take new retail delivery by 01/04/2027. (See Trims)
See State Disclaimer *

Manufacturer Offer

GM Military Offer

$500 Offer

Applies to this new 2026 GMC Sierra 1500

Offer only valid Jan 03, 2026 through Jan 04, 2027

Disclaimer(s)

Eligible military personnel includes Active Duty members, Reservists, National Guard members, Veterans and Retirees of the U.S. Army, Navy, Air Force, Marine Corps and Coast Guard. Eligible participants are able to sponsor their spouse. At participating dealers only. Visit gmmilitaryappreciation.com for program eligibility details and for a list of eligible vehicles. Not available with some other offers. Must provide authorization number to participating dealer prior to or at time of vehicle delivery to receive offer. Must take new retail delivery by 01/04/2027. (See Trims)
See State Disclaimer *

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Disclaimer: The Manufacturer’s Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.

¹Dealer Discount applied to everyone