New and used 2026 GMC Sierra 1500 trucks for sale near Summit, WI

Smooth purchase transaction. Saw the car I was looking for and purchased it with the help of a very pleasant knowledgeable young salesman. All done within hours.

Easy purchase experience, would recommend to anyone looking for a new car. Everyone there was friendly and made the whole process as smooth as possible

Great experience from beginning to end!! Extremely knowledgeable great customer service actually the best customer service I've ever experienced would definitely buy another car from them and recommend them to friends and family.

A little expensive, but comfortable, quiet, smooth ride. Great performance out of the 6.2L and better than expected fuel economy in the low 20s. Outstanding interior and good looking exterior, especially in the Downpour Metallic color. I don’t have 700 miles on it yet and have owned it for 3 weeks. Therefore, I can’t pass judgement yet on the reliability, but so far I am very satisfied. This replaced an 8 year old Ford F150 that served me quite well with only a couple of issues in the 100,000 plus miles.

I will return. Best service department in Waukesha. And I have been to several of them.

It was such a good truck honstly the greatest thing I have ever drove in my entire life I am so happy that I have been blessed with this being my first ever car

Lucas was excellent. Very efficient and has us in and out in 90 minutes. Great price on the vehicle and top dollar for my trade. Highly recommend.

Overall pleasant experience. I had some issues arise in the purchasing process, but they were all addressed timely and satisfactorily. Nice people to deal with.

Thanks for your help! This dealership offered a great deal that I couldn't pass up on. Glad to have worked with them to make this happen. I am particularly appreciative of the no-hassle and no-pressure environment that the salesperson, Cody, did a great job fostering. Looking forward to working with them in the future!

Just want to comment on the outstanding effort & style of salesman Mike Pehl. Spends whatever time & effort needed to make things happen. This is a late review as I leased a 2015 LTZ Equinox. Just wanted to him an atta boy. Thanks again Mike.

The employees were professional and friendly. They took their time to understand our needs and preferences to help us identify the best vehicles for us. They never pressured us or rushed us to make a purchase.

I went in for an oil change and came out with a new vehicle. The sales staff are amazing. Friendly, accomodating and efficient. The manager in the service department pays attention to the details. He has been very friendly and accomidating.

It was all handled very well. The man who took my order handled it very professionally. The service was completed in a timely fashion and he explained all that had been done and may need to be done in the future. I appreciated it very much.

Everyone was very polite and friendly Tim was very helpful and and courteous he went above and beyond to get my car repaired and can?t wait to come back in for normal service

They gave me some cookies and were very nice. And the car was super cool.

Given the snowy weather the day we bought the vehicle, the Sales and Finance folks were great! I'll recommend this company to anyone. Thanks for everything.

I purchased a used vehicle from Mike Juneau's Brookfield Buick GMC last year, and a few months later discovered a mechanical issue that needed attention. The problem was something that really should have been noted or recognized during their pre-sale inspection and preparation. I reached out to the dealership, explained the situation, and provided the relevant details. The team was incredibly responsive, professional, and apologetic from the very first interaction. They reviewed everything quickly, took full responsibility, and agreed to cover the entire cost of the repair at the shop of my choice, no questions asked and no hassle. In today's world, it's refreshing to see a dealership step up like this, especially for a used car. Their accountability and willingness to make things right completely restored my confidence in them. If you're in the market for a Buick, GMC, or just want a dealership that treats customers fairly and with integrity, I highly recommend Mike Juneau's Brookfield Buick GMC. Fantastic experience, thank you to the entire team!

Nick our salesman made the process smooth, easy and enjoyable by being professional, knowledgeable and caring about my wife and I. Would recommend to all family and friends

We have used this Cadillac dealership to service our Cadillacs for years. This time, we dropped the vehicle off to be serviced the next day . . . however, later that afternoon the phone rang and our car was ready to be picked up - a day early! What impresses me about this dealership is . . . the friendliness of their staff, the cleanliness of their facilities the quality of their repairs - all just top notch!

After having an oil and filter change, we noticed a swishing sound. My husband pulled the air cleaner and discovered that some 'tabs' were not place properly. He fixed the problem and the swishing sound diminished. Not a big deal, but it would be nice if it wasn't there.

No pressure car buying experience with Chad Braeger. He answered all our questions that we had. When I went back a week later to pick up the vehicle from having accessories installed, Chad met me at the door and answered any follow up questions I had with the vehicle.