Hail Damage? We Can Fix That! We Work With Most Insurance Companies! Immediate Appointments Available.
GMC TRUCK MONTH
0% APR FOR 5 YEARS for well-qualified buyers.1 OR 2026 GMC SIERRA HEAVY DUTY DENALI MODELS 4.9% APR FOR 48 MONTHS for well-qualified buyers.2
1. Monthly payment is $16.67 for every $1,000 you finance. Average example down payment is 10.3%. Must finance through GM Financial. Some customers may not qualify. Not available with lease and some other offers. Take new retail delivery by 6/30/26. 2. Monthly payment is $22.98 for every $1,000 you finance. Average example down payment is 10.7%. Must finance through GM Financial. Some customers may not qualify. Not available with lease and some other offers. Take new retail delivery by 6/30/26.
0.9% APR FOR WELL-QUALIFIED BUYERS.1 Plus, up to $2,250 PURCHASE ALLOWANCE for current eligible non-GM owners/lessees.2 Plus, no monthly payments for 90 days.3
1. Length of contract limited. Must finance through GM Financial. Some customers June not qualify. Not available with lease and some other offers. Take new retail delivery by 6/30/26. 2. MUST BE A CURRENT OWNER OF A 2012 MODEL YEAR OR NEWER NON-GM VEHICLE OR A CURRENT LESSEE OF A 2021 MODEL YEAR OR NEWER NON-GM VEHICLE FOR AT LEAST 30 DAYS PRIOR TO NEW VEHICLE SALE. Not available with lease and some other offers. Take new retail delivery by 6/30/26. 3. Deferred monthly payments for 90 days. Excludes residents of PA. Must finance with GM Financial. Some customers June not qualify. Down payment required at signing, if applicable. Finance charges accrue from date of financing. Not available with lease and some other offers. Take new retail delivery by 6/30/26.
TRUCK MONTH 3.9% APR FOR 5 YEARS for well-qualified buyers.1 Plus, an additional $3,000 PURCHASE ALLOWANCE for current eligible non-GM owners/lessees.2 Plus, no monthly payments for 130 days.3
1. Monthly payment is $18.37 for every $1,000 you finance. Example down payment is 28.3%. Must finance through GM Financial. Some customers may not qualify. Not available with lease and some other offers. Take new retail delivery by 6/30/26. 2. MUST BE A CURRENT OWNER OF A 2012 MODEL YEAR OR NEWER NON-GM VEHICLE OR A CURRENT LESSEE OF A 2021 MODEL YEAR OR NEWER NON-GM VEHICLE FOR AT LEAST 30 DAYS PRIOR TO NEW VEHICLE SALE. Not available with lease and some other offers. Take new retail delivery by 6/30/26. 3. Deferred monthly payments for 130 days. Excludes residents of PA. Must finance with GM Financial. Some customers may not qualify. Down payment required at signing, if applicable. Finance charges accrue from date of financing. Not available with lease and some other offers. Take new retail delivery by 6/30/26.
OnStar One delivers the best in safety, control and entertainment
OnStar® plan, working electrical system, cell reception and GPS signal required. OnStar links to emergency services. Not all vehicles may transmit all crash data. Service coverage varies with conditions and location. Service availability, features and functionality vary by device and software version. Subject to user terms. See onstar.com for details and limitations.
OnStar One delivers the best in safety, control and entertainment
OnStar® plan, working electrical system, cell reception and GPS signal required. OnStar links to emergency services. Not all vehicles may transmit all crash data. Service coverage varies with conditions and location. Service availability, features and functionality vary by device and software version. Subject to user terms. See onstar.com for details and limitations.
Quality-GMC—May-2026
SALES PRICE INCLUDES $2,500 QUALITY DISCOUNT, $1,500 BONUS CASH AND $750 NON-GM OWNERS AND LESSEES REBATE, MUST OWN A 2012 OR NEWER NON-GM VEHICLE TO QUALIFY. TAX, TITLE, LICENSE FEES AND DOC FEES ARE EXTRA. OFFER EXPIRES 6/11/2026. SEE DEALER FOR DETAILS.
2
ALES PRICE INCLUDES $2,500 QUALITY DISCOUNT, $4,000 EXCLUSIVE EVENT SAVINGS AND $1,750 NON-GM OWNERS AND LESSEES REBATE, MUST OWN A 2012 OR NEWER NON-GM VEHICLE TO QUALIFY. TAX, TITLE, LICENSE FEES AND DOC FEES ARE EXTRA. OFFER EXPIRES 6/11/2026. SEE DEALER FOR DETAILS.
3
SALES PRICE INCLUDES $2,500 QUALITY DISCOUNT, $1,500 BONUS CASH AND $750 NON-GM OWNERS AND LESSEES REBATE, MUST OWN A 2012 OR NEWER NON-GM VEHICLE TO QUALIFY. TAX, TITLE, LICENSE FEES AND DOC FEES ARE EXTRA. OFFER EXPIRES 6/11/2026. SEE DEALER FOR DETAILS.
4
SALES PRICE INCLUDES $1,050 QUALITY DISCOUNT, $250 BONUS CASH AND $750 NON-GM OWNERS AND LESSEES REBATE, MUST OWN A 2012 OR NEWER NON-GM VEHICLE TO QUALIFY. TAX, TITLE, LICENSE FEES AND DOC FEES ARE EXTRA. OFFER EXPIRES 6/11/2026. SEE DEALER FOR DETAILS.
5
SALES PRICE INCLUDES $2,350 QUALITY DISCOUNT AND $750 GMF BONUS CASH, MUST FINANCE THROUGH GM FINANCIAL, BASED ON APPROVED CREDIT FOR WELL-QUALIFIED BUYERS. TAX, TITLE, LICENSE FEES AND DOC FEES ARE EXTRA. OFFER EXPIRES 6/11/2026. SEE DEALER FOR DETAILS
6
SALES PRICE INCLUDES $5,000 QUALITY DISCOUNT, $2,000 QUALITY BONUS SAVINGS AND $1,500 PURCHASE ALLOWANCE. TAX, TITLE, LICENSE FEES AND DOC FEES ARE EXTRA. OFFER EXPIRES 6/11/2026. SEE DEALER FOR DETAILS
7
SALES PRICE INCLUDES $4,000 QUALITY DISCOUNT, $1,750 PURCHASE ALLOWANCE $2,500 BONUS CASH AND $3,000 TRADE ASSIST, MUST TRADE 2012 OR NEWER VEHICLE. TAX, TITLE, LICENSE FEES AND DOC FEES ARE EXTRA. OFFER EXPIRES 6/11/2026. SEE DEALER FOR DETAILS
Enclave
Enclave
Encore GX
Encore GX
Envision
Envision
Envista
Envista
Terrain
Terrain
Acadia
Acadia
Yukon
Yukon
Yukon XL
Yukon XL
Canyon
Canyon
Sierra 1500
Sierra 1500
Sierra HD
Sierra HD
Sierra 3500 Chassis Cab
Sierra 3500 Chassis Cab
Sierra EV
Sierra EV
Hummer EV
Hummer EV
HUMMER EV SUV
HUMMER EV SUV
HUMMER EV Pickup
HUMMER EV Pickup
Savana
Savana
Savana Cargo
Savana Cargo
Savana Cutaway
Savana Cutaway
Savana Passenger
Savana Passenger

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Welcome to Quality Buick GMC

Welcome to Quality Buick GMC, your premier Buick and GMC dealership serving Alton, IL, and the greater St. Louis metro area. Whether you're shopping for a new 2026 GMC truck or SUV, a refined Buick, or a quality pre-owned vehicle, our team is here to deliver a straightforward, pressure-free experience from start to finish. Drivers from St. Louis, Edwardsville, Granite City, and Gillespie all find us easy to reach at 1620 Homer M Adams Pkwy in Alton.

Shop 2026 New Buick & GMC Vehicles

Quality Buick GMC maintains a strong selection of new inventory across both brands, giving Illinois and Missouri drivers access to some of the most capable and refined vehicles on the market today. GMC truck and SUV shoppers will find a full lineup including the Sierra 1500, Sierra HD, Sierra EV, Canyon, Yukon, Acadia, and the head-turning GMC Hummer EV. Buick shoppers can explore the premium Enclave, the versatile Envision, and the entry-luxury Encore GX and Envista. Check our current new vehicle specials for the latest incentives and offers.

Quality Pre-Owned Vehicles for Every Budget

Our pre-owned inventory spans a wide range of makes, models, and price points, with every vehicle carefully inspected before hitting our lot. For maximum confidence, browse our certified pre-owned inventory, where every vehicle meets strict GM standards and is backed by an extended factory warranty. Shoppers working with a tighter budget can explore our vehicles priced under $15,000, or check our pre-owned specials for current deals.

Auto Financing for All Credit Profiles

The Quality Buick GMC finance center works with a broad network of lenders to structure competitive loan and lease terms for buyers at every credit tier. Apply for financing online before your visit to get a head start, or use our trade-in tool to get a market-based estimate on your current vehicle and reduce your out-of-pocket costs on your next purchase.

Expert GM Service & Collision Repair in Alton, IL

Our commitment to customers extends well beyond the sale. Quality Buick GMC's factory-trained, GM-certified technicians handle everything from routine oil changes, tire service, and brake inspections to suspension service, A/C repair, and battery diagnostics. Our dedicated collision and body shop is also on-site for accident repair and bodywork. Check our current service and parts specials and schedule your appointment online today. Not sure why you should choose us for service? Here's why drivers across the St. Louis metro trust Quality Buick GMC to keep their vehicles at peak performance.

Serving Alton, St. Louis & the Surrounding Area

Quality Buick GMC is proud to serve drivers across southwestern Illinois and the greater St. Louis metro, including Alton, Edwardsville, Granite City, Gillespie, and beyond. Whatever your automotive need, our team is here to help. Contact us with any questions or explore all the areas we serve to find out how close we are to you.

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Our Reviews

DealerRater Apr 8, 2026

Very pleased with service I got from recent visit to dealership! Russ was very professional curtis & kept me informed each step!! Great employee

DealerRater Feb 5, 2026

Great dealership at which to have your vehicle serviced. They do the work in a timely and professional manner keeping the customer informed during the process. I will definitely chose Quality Cadillac when I purchase my next vehicle.

DealerRater Jun 14, 2022

Probably the easiest car buying experience I’ve ever had. Everyone was highly professional and friendly.

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Main: (618) 465-8881 Sales: (877) 875-0572 Service: (877) 561-7727

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1620 Homer Adams Pkwy, Alton, IL, 62002

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1620 Homer Adams Pkwy
Alton, IL 62002
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Quality Buick GMC 38.92027, -90.16714.