Billion Auto - Buick GMC in Sioux Falls including address, phone, dealer reviews, directions, a map, inventory and more

A member of the family

600 W 41st St
Sioux Falls, SD 57105

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Sales: 877-391-7586

Used Cars: 844-234-9525

Hours Toggle

Sales Department

Sun Closed
Mon 8:00am – 8:00pm
Tue 8:00am – 8:00pm
Wed 8:00am – 8:00pm
Thu 8:00am – 8:00pm
Fri 8:00am – 6:00pm
Sat 9:00am – 6:00pm

Service Department

Sun Closed
Mon 8:00am – 5:30pm
Tue 8:00am – 5:30pm
Wed 8:00am – 5:30pm
Thu 8:00am – 5:30pm
Fri 8:00am – 5:30pm
Sat 8:30am – 4:30pm

Reviews of Billion Auto - Buick GMC

Overall Rating:

4.7 (out of 5)

97% recommend this dealer

196 total reviews

Showing the most recent reviews from and DealerRater.

1.0 (out of 5)

Belittling and disrespectful

Reviewed by John from Rapid City Sd August 19, 2021

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.

  • Does not recommend this dealer
  • Shopped for a used car
  • Did not make a purchase

Overall Facilities 1

Customer Service 1

Buying Process 1

Quality of Repair 1

Maximum rating = 5

5.0 (out of 5)

GMC Acadia

Reviewed by GARY MILES from Sioux Falls, SDMay 07, 2021

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

  • Does recommend this dealer
  • Shopped for a new car
  • Did make a purchase

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!

Overall Facilities N/A

Customer Service 5

Buying Process 5

Quality of Repair 5

Maximum rating = 5

2.7 (out of 5)

No attention to detail

Reviewed by Scott from Brandon, SDApril 23, 2021

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.

  • Does not recommend this dealer
  • Came in for service or repair
  • Did make a purchase

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!

Overall Facilities N/A

Customer Service 4

Buying Process N/A

Quality of Repair 2

Maximum rating = 5

About Billion Auto - Buick GMC

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

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