Billion Auto - Buick GMC

(202 reviews)
Visit Billion Auto - Buick GMC
Sales hours: 8:00am to 8:00pm
Service hours: 8:00am to 5:30pm
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Service Sales
Monday 8:00am–5:30pm 8:00am–8:00pm
Tuesday 8:00am–5:30pm 8:00am–8:00pm
Wednesday 8:00am–5:30pm 8:00am–8:00pm
Thursday 8:00am–5:30pm 8:00am–8:00pm
Friday 8:00am–5:30pm 8:00am–6:00pm
Saturday 8:30am–4:30pm 9:00am–6:00pm
Sunday Closed Closed
New (877) 391-7586 (877) 391-7586
Used (877) 394-0042 (877) 394-0042
Service (877) 395-5208 (877) 395-5208


See all 356 vehicles from this dealership.

About our dealership

This seller has been on since January 2019.
Billion Automotive has over 7000 new and pre-owned vehicles for you to choose from. We hope this vehicle fits your needs or if you'd like to shop around find more quality vehicles online at
Sioux Falls Buick GMC Giant

Service center

Phone number (877) 395-5208

Service hours



(202 reviews)

A dealership’s rating is calculated by averaging its lifetime reviews.

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Belittling and disrespectful

Do not waste your time. Both dealerships in Rapid city and Sioux Falls SD will belittle and disrespect your and any knowledge you have on a vehicle your interested in. If your making a cash offer they won’t even deal with you and give you a brush off as if your money is not good enough at Bullion Auto group. Their vehicles are over priced and seem to be hiding issues. Run fast and skip Billion dealerhips.


GMC Acadia

Great people great service Very happy with the customer service the follow up and financial program

Dealer response

Gary, thank you for your review and five star recommendation, we are glad you enjoyed your visit with us! We appreciate your business, thanks for choosing Billion GMC Sioux Falls!


No attention to detail

I brought my truck in for warranty repairs, an exhaust rattle and leaky rear window. The service tech could not find the rattle and it was not fixed. The leaky rear window was replaced with a new window. When I picked my truck up and looked over the repair I immediately noticed that all the b and c pillar panels and dome light were not installed properly, and some interior panels were scratched with a screwdriver. Also all the panels were dirty. Once I had the truck home I found the exhaust right away and was able to fix myself along with the panels that were not installed correctly.

Dealer response

Scott, Thank you for your review and feedback, we apologize for the service experience, it sounds as if we were not on par with your expectations and ours! Our service department is staffed with highly qualified individuals that have been working with us for many years, we don't know how we could have been so sloppy. But we would like to know more, so that we can address these issues. Please contact us ASAP with the invoice information, 888-995-3910, we are here to help!


Well done

The truck I purchased was the first time buying a vehicle out of state and the first time buying before I went on a test drive. They were very professional, worked with me on the price, and very accommodating to my out of state situation.

Dealer response

Chad, Thank you for your recommendation, and your feedback, we appreciate it! We are glad to hear everything went well with your new truck purchase, and congratulations! We sell a lot of vehicles on-line, and provide a transparent transaction with no surprises! Thanks for choosing Billion Buick GMC!



Everything was decent besides got over charged for a car that has alot of issues. And 3,000 over bluebook value. I would go back to them but I will make sure I will research alot harder now

Dealer response

Chris, Thank you for your review and recommendation, we want you to enjoy complete satisfaction with your vehicle purchase. We provide a complete history report FREE on any used vehicle, along with the offer for you to take the vehicle to any independent garage for a complete inspection. We try and provide the best deals, along with quality vehicles that anyone has in the area. We appreciate your business, thanks for choosing Billion Auto - Buick GMC of Sioux Falls!


Billion Automotive

I have never had a bad experience at Billion's service dept. My advisor, Andy Harstead is exceptional.

Dealer response

Georgia, Thank you for your review and recommendation, we are glad you have had great experiences with us. Andy does a super job with communication, timeliness of repair, and on budget. Thank you for your business, and for choosing Billion Buick GMC of Sioux Falls!


New Car Purchase at Billion Auto

The salesperson was very courteous and helpful with our trade in value and finalizing the deal and financing options.

Dealer response

Dave, Thank you for your review and recommendation, we appreciate your business. We try and make the shopping/buying process transparent and easy to understand your options. Glad you enjoyed your experience with us, we look forward to serving you again in the future! Thanks for choosing Billion Buick GMC of Sioux Falls, and CONGRATULATIONS on your new vehicle purchase!


Billion Buick sales experience

Great experience purchasing our new Avenir. Jessie McGraw was our salesperson, He is very knowledgeable of the vehicles features. The time Jessie spent with us after the sale teaching us how to use all the features was very helpful. We had a very good experience with the entire organization.

Dealer response

It's our commitment to ensure quality customer care by providing comfortable and relaxing facilities as well as friendly and professional service to our guests. Please come see us for any future needs.


Bring your GM vehicle here

Service provider Dan was great! Car drives wonderful now! Bring your GM vehicle to this dealer. Billion Chevy is TERRIBLE, never once had a good experience with them.

Dealer response

Hello, we're happy to hear you had such a positive experience with our team! Thank you again for leaving us this response!


2020 avenir 5gaevckw9lj117991

I have bought a few new Buick from Billion Auto. the sales person that I deal with is RED. I have always been very happy with him. He always shows me the features of my car.

Dealer response

John, Thank you for your review, we appreciate your feedback! Todd (RED) does a great job and is one of our top sales people. Getting a deal put together, taking you through your options, and doing a delivery walk through is what makes him great! Thank you for your business, we appreciate it and thank you for choosing Billion Buick GMC of Sioux Falls!

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