Welcome to DeMarois Buick GMC

Did a great job. They were professional and fast. Can’t wait to do more with them.

Ivory and Sr technician should be rated 5 stars for service . They treated me well

Extremely Smooth & Seamless Experience In all Areas Of The dealership. I Absolutely Would Recommend This Dealer To All Concerned.

I purchased my truck from DeMarois 3 years ago. I took my truck in for warranty service a couple of times. The service department (and especially Ivory the service writer) have been great to work with.

Ivory in service is the best, she goes above & beyond for her customers, we are very happy with her work.

Excellent customer service! We had problems with our Sprinter van and had to be towed in from Glacier National Park. Inspite of their already busy workload they were able fit us in and get us back on the road and our vacation in a short period of time. Thanks guys!

I receive excellent service each time I visit this dealership. I have also purchased many cars and trucks and am totally satisfied with the interactions I have had with the demarois staff.

Best purchase experience I’ve had in over 5 decades of buying numerous vehicles, including Jeeps, Dodge RAMs, Corvettes, Porsche, Land Rovers, and Mercedes. Friendly, helpful, knowledgeable salesman. Lew did everything promised and had purchase paperwork ready when we showed up to complete purchase. If I were ever to buy another Mercedes, I would definitely go to DeMarois.

I was traveling and had transmission problems. they made an appointment for me the next day. I got stuck in traffic when going there and was 40 minutes late. They still got me in, fixed my issue at a reasonable price, and got me back on the road. Thanks Demoris GMC service

Friendly, competent and professional Thanks again for your help and repair to our new motor home

I received the initial DEF notification of DEF level at 30% while traveling between Sundance WY and Hardin MT. While in Hardin, I purchased a 2.5 gal. container of API certified DEF and added it to the truck prior to departure for Bozeman MT. The DEF level did not reset during the trip and continued to count down. I made contact with a knowledgeable friend who advised me to go to a dealer for investigation. My friend also said that it could take a number of start-run- off cycles to reset. I went grocery and pet food shopping in Bozeman (4 cycles in addition to the one for departing Hardin). While traveling to Missoula MT the DEF level was frozen at 24%. After arriving in Missoula, I contacted Demarois and got an appointment for the following morning, as they had a cancellation. Within and hour, it was determined there we no trouble codes and that the DEF level sensor was working, plus the level sensor was recalibrated. I was advised that it can take 20 starting cycles before the level resets. The charges we quite reasonable. The DEF level now shows OK. I am quite happy with service advisor Ivory and the shop diesel technician who did the work. I recommend this dealership.

Friendly staff, very professional, excellent warranty work on your vehicle. Would definitely go back for work on my vehicle.

Always professional, courteous, and expedient. I wouldn’t go anywhere else for my car needs.

Wonderful service we always tell all our friends to go to Lou at DeMarois best in the business. The Bells

Very pleasant folks. Straightforward and zero pressure or salesman tricks and gimmicks. I was on my way with my car in record time.

Always on time, and exactly what’s needed. They take great care with all they put their hand to!

Ivery in service has been awesome, honest and straight forward. I recommend DeMariis GMC to everyone! Jimmy Anderson of Woods bay Montana

Jeff at the Mercedes dealer ship was awesome. The repair got us back on the road in no time. Very clean waiting area Thanks again.

They always give great service! The waiting area is very comfortable! They always answer any question I have about my car.

Awesome customer service! The gal that checked me in was amazing! Will be back because of her!!! Thank you!!

Colin was very good to communicate with and did a great job keeping us informed the best he could in this uncertain climate of auto production. We were quite pleased with him.

Rob was great to work with making purchase as smooth as possible. Scott was also a pro in getting us through the title process and payment side.

East reliable fast and great people Will most certainly continue to use them. Very pleased

Wayne was extremely friendly and the process went very well. I would go back again anytime.

Good service. Kept me informed of what was happening and expected costs. Appreciate the option to have a loaner car while service is ongoing