Cummins Sales and Service
- Labor rate
- Ask for a quote
- Services
- General RV repair
- Phone
- (406) 245-4194
- Website
- cummins.com
About Cummins Sales and Service
Cummins Sales and Service in Billings is a full-service shop for Cummins engines in RVs, over-the-road trucks, and equipment. They also service Onan generators and Eaton transmissions. It's a manufacturer-backed spot, so you're getting dealer-level work. Reviews are mixed. One RVer with a warped exhaust manifold on a 5.9 Cummins got in a few days after calling and was fixed in one day. Another had a turbo actuator diagnosed in 15 minutes and praised the fair price and friendly techs. Others mention part availability and diagnosis speed. But some had trouble. One camper arrived without an appointment on a busy Friday; their fridge and generator both quit and they were told the shop was booked 6 to 8 weeks out. Another had a radiator clamp break right after a big repair, causing a coolant leak 300 miles down the road. The shop's own description says to call with other inquiries.
Good to know
- Full service for Cummins engines and Onan generators
- Eaton transmission service available
- 45 Google reviews, 4.1 rating
- Same-day diagnosis reported by some customers
- Booked weeks out at times; call ahead
Amenities
Shop hours
| Monday | 7am – 5pm |
| Tuesday | 7am – 5pm |
| Wednesday | 7am – 5pm |
| Thursday | 7am – 5pm |
| Friday | 7am – 5pm |
| Saturday | Closed |
| Sunday | Closed |
Mobile techs often book a few days out. Call to see when they can get to you.
What renters mention
“Pulled in here today with no appointment on a busy Friday afternoon. Our refer will not switch over to gas and we're waiting on a part. Then our generator goes out. We may lose everything in the freezer and fridge.” – Pam Y., Edited 5 years ago, on Google
“These guys and gals are amazing. My new generator came in faster than quoted, so when I got the call it was in, I could not clear my schedule to come in for a month. The next morning my generator took its last breath and died.” – Brandy M., 2 years ago, on Google
“The reason for going to Cummins was to find out why our truck lacked power in the lower gears. In 15 minutes we got a diagnosis, the turbo actuator was bad. A little more than we thought but it had to be fixed.” – Anne F., 7 years ago, on Google
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