Inventory Search
Welcome to Arnie Bauer GMC
Arnie Bauer GMC is the GMC dealership Wilmington, IL drivers trust for new Sierra trucks, Acadia and Terrain SUVs, quality pre-owned vehicles, and honest service, backed by a family-owned team with more than 75 years of combined dealership experience in Will County. Whether you're shopping new inventory, browsing pre-owned models, or scheduling a repair, our Wilmington showroom makes car buying simple for drivers across Joliet, Plainfield, Braidwood, and Lakewood Shores.
We recently added the full GMC lineup to our Wilmington store, giving shoppers a growing selection of new and used vehicles across GMC and Buick. Explore our new GMC vehicles or browse our pre-owned inventory, and let our finance team build a payment plan that fits your budget.
Learn More| 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 - 5:00PM |
| Sunday | Closed |
| Monday | 8:00AM - 4:30PM |
| Tuesday | 8:00AM - 4:30PM |
| Wednesday | 8:00AM - 4:30PM |
| Thursday | 8:00AM - 4:30PM |
| Friday | 8:00AM - 4:30PM |
| Saturday | 8:00AM - 1:00PM |
| Sunday | Closed |
| Monday | 8:00AM - 4:30PM |
| Tuesday | 8:00AM - 4:30PM |
| Wednesday | 8:00AM - 4:30PM |
| Thursday | 8:00AM - 4:30PM |
| Friday | 8:00AM - 4:30PM |
| Saturday | 8:00AM - 1:00PM |
| Sunday | Closed |
New and Used Vehicle Inventory
Arnie Bauer GMC stocks the vehicles Wilmington drivers ask for: the 2026 GMC Sierra 1500 and Sierra HD trucks, the redesigned 2026 GMC Terrain, the three-row 2025 GMC Acadia, and the full-size 2026 GMC Yukon. Each new GMC model at our Wilmington dealership includes manufacturer warranty coverage and access to current incentives, including employee pricing on Sierra 1500 and low-APR financing on Sierra HD trucks.
Need a work truck for a job site near Joliet, or a family SUV for school runs around Plainfield? Our new inventory search lets you filter by model, trim, and payment. We also carry the GMC Canyon midsize truck and are expanding our electric lineup with the Sierra EV and Hummer EV. Every new GMC purchase includes a walkthrough of GM Rewards and available Super Cruise technology.
Not every buyer needs a new vehicle, and Arnie Bauer GMC keeps a rotating selection of pre-owned trucks and SUVs for shoppers across Wilmington, Plainfield, and the surrounding area. Our used inventory includes GMC, Buick, and other makes, many under $25,000, giving budget-conscious buyers real options beyond new-vehicle pricing.
Every pre-owned vehicle is inspected by our service team before it reaches the lot, and CARFAX history reports are available so buyers can verify one-owner and accident-free status. Trading in is simple too: use our value your trade tool to get a real number on your current vehicle before you shop, whether you're upgrading to a new Sierra or moving into your first pre-owned Terrain. Ask our sales team about GM Certified Pre-Owned eligibility on qualifying used GMC models.
Specials & Deals
Arnie Bauer GMC updates new and pre-owned specials monthly. Current offers include 0% APR for well-qualified buyers on the 2026 Sierra 1500 with employee pricing for everyone, plus 4.9% APR financing and no monthly payments for 90 days on Sierra HD trucks. Pre-owned specials rotate with inventory, so Wilmington shoppers who check back often find the best combination of price and mileage.
Beyond vehicle pricing, our service and parts specials help offset the cost of routine maintenance year-round, including seasonal offers on oil changes, brakes, and tires. Because manufacturer incentives change monthly and often require GM Financial approval, confirm current terms with our sales team before your visit.
Service and Parts Department
The Arnie Bauer GMC service center in Wilmington is staffed by factory-trained technicians who handle everything from routine oil changes to complex engine and transmission repairs on GMC and Buick vehicles. Our team uses genuine GM parts, which matters for maintaining warranty coverage on Sierra trucks and Acadia, Terrain, and Yukon SUVs.
Scheduling is straightforward: book a service appointment online in a few minutes. We handle brake service, battery testing, and tire fitting through our tire finder tool, so most maintenance needs are covered in a single visit. Drivers weighing a repair against a trade-in can use our fix-or-trade guide to decide which option makes more sense. Genuine GMC accessories and OEM parts can be ordered directly through our parts department for pickup in Wilmington.
Financing Options at Arnie Bauer GMC
Financing at Arnie Bauer GMC is built to work for a range of credit situations, since our finance team works with multiple lenders rather than a single bank. Start with our secure finance application or get pre-approved online before you visit, so you walk in already knowing your approximate rate and payment range.
Our payment calculator lets you model down payments, loan terms, and trade-in values against any vehicle in our inventory, and a free Equifax credit score check helps you understand where you stand before applying. We also offer GMC protection products, including extended protection plans, GAP coverage, pre-paid maintenance, and tire and wheel protection, built into one monthly payment. Whether financing a new Sierra 1500 or a pre-owned Terrain, our goal is a process that's fast and transparent.
Visit Us Today!
We invite you to visit Arnie Bauer GMC, your local GMC dealer in Wilmington, IL, to experience our customer-first approach. Our team is dedicated to making your car buying journey enjoyable and stress-free. Stop by during our sales hours or contact us to schedule a test drive. We look forward to welcoming you to our dealership family!