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Explore Our Models

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 EV
Sierra EV
HUMMER EV SUV
HUMMER EV SUV
HUMMER EV Pickup
HUMMER EV Pickup
Savana
Savana
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.
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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.
Buick and GMC Certified Pre-Owned logos

Each Buick/GMC Certified Pre-Owned vehicle is thoroughly inspected and reconditioned and includes factory-backed limited warranties and roadside assistance.

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Buick and GMC CPO Vehicles - vehicle interior
Boucher Buick GMC of Waukesha storefront

Buick GMC Dealer in Waukesha, WI

Boucher Buick GMC is a premier Buick dealer and GMC dealer in Waukesha, WI. Waukesha WI is located just on the border of Brookfield WI and just a short drive from downtown Milwaukee WI. Whether you're searching for new vehicles like the Buick Enclave, Buick Encore GX, Buick Envision; GMC Acadia, GMC Terrain, GMC Yukon, GMC Yukon XL, GMC Canyon, or GMC's top-selling truck, the Sierra; with options including the GMC Sierra 1500, GMC Sierra 2500HD, or the GMC Sierra 3500HD, along with a large selection of diesel trucks for sale, Boucher Buick GMC of Waukesha wants to be your first choice of Wisconsin Buick Dealership and Wisconsin GMC Dealership.

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Boucher Buick GMC of Waukesha Certified Service

Your vehicle deserves expert care from the people who know it better than anyone else. We employ factory-trained technicians who use state-of-the-art technology and equipment to help you keep your vehicle running like new.Trust your vehicle to the Certified Service experts. Simply click on the tab or call to schedule an appointment today.

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GM Certified Service

Our Reviews

Google Jun 1, 2026

Google Jun 1, 2026

Google May 29, 2026

Excellent customer service! I drove from 2hrs from IL and it would do it over and over again. We’ve purchased several cars locally and you sit for HOURS and HOURS waiting just to sign and drive off the lot. NOT at Boucher!!! They did everything they needed to do before I drove out! I walked in, signed papers, had great conversation with my new Pal Bill Cousino ( He’s amazing) Bill showed me all the new awesome features on my new 2026 Yukon Denali and I drove home smiling ear to ear. It couldn’t have been a better experience. They are my first choice dealer

Google May 29, 2026

Google May 27, 2026

Purchasing a new vehicle from Boucher Buick GMC was a great experience from start to finish! I'd do it all over again. 👍😊

Google May 27, 2026

We had a great experience from our first phone call with Brady to picking up our vehicle 3 days later. Brady Riesen and Cory Elbert made this our easiest vehicle purchase ever.

Google May 27, 2026

Joe Hacker and Boucher GMC were great to work with. A clean, no hassle deal. Highly recommend!

Google May 25, 2026

Just an overall great experience yet again deal with Boucher Group and things that Chris Tessmer Scott, Teigland and Bill Casino For helping me find the perfect vehicle for my wife

Google May 24, 2026

Google May 22, 2026

Google May 18, 2026

I purchased a 2017 GMC1500 Sierra from Bouche in October of last year . 3 days after my purchase, the information screen began to flip around. The problem was finally diagnosed as a defective computer which was replaced at no cost to me. Just recently it started doing the same thing. I took it into Bouche's service department & they identified an electronic problem & fixed it with an appropriate charge. Taylor was my contact person in the service Dept. I found her to be very professional and helpful in working with me through these issues. I thank Taylor and would recommend Bouche as a result of my experience with resolving this issue.

Google May 14, 2026

Buying process was smooth, professional, and transparent.

Google May 9, 2026

Very pleased with Lee.

Google May 7, 2026

Outstanding service! Great price! Friendly & helpful staff! Very happy with my new truck. Boucher goes the extra mile!

Google May 7, 2026

My daughter brought her car there when she was away from home and in Waukesha for college. Car was making loud rumbling sounds. Angel was very professional and very helpful. Thank you for taking care of her car when she needed it. It seems she was in good hands at Boucher. Will definitely return if needed.

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Main (262) 409-2600 Parts (262) 254-6858 Sales (262) 649-9246 Service (262) 672-4215
1907 E Moreland Blvd
Waukesha, WI 53186
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Boucher Buick GMC of Waukesha 43.0268, -88.1931.