Cummins Sales and Service

Reviews

• AK

  Anne Klumpp

  Jun 9, 2026
  5.0
  We cannot say enough good things about the Cummins service department in Mount Clemens. We live, work, and travel full-time in our Entegra Coach motorhome, so having a service location we can truly trust is incredibly important to us. Bob, our service writer, is outstanding. He is thorough, knowledgeable, caring, and excellent at communicating throughout the process. He kept us informed, explained things clearly, and genuinely seemed to have our best interest in mind. We went out of our way to bring our motorhome to this location for service this year, and we are so glad we did. The whole team was great, and we’re grateful not only for the quality service work, but also for having a comfortable office space where we could work for the day while our coach was being serviced. We trust this location immensely and will absolutely be back.
• AP

  amel posner

  Nov 20, 2017
  5.0
  Got my girls truck Cummings and not stroken !
• NC

  Nigel Ciappara

  Jul 21, 2017
  3.0
  Took nearly a month for an engine repair under warranty. When I got the truck back: 1) Compression brakes cutting off randomly 2) Sleeper AC not working 3) Cab AC not cold 4) Bumper brackets broken All after my completion date kept getting moved back. Returned to have issues addressed. They claimed turbo was shot and that the compression sylenoids were bad. Denied responsibility for bumper and AC issues. Claimed leak in AC and that bumper arrived like that. Nearly 2 weeks later I got the truck back. Replaced turbo under warranty and, charged me $700 for compression sylenoids and $350 for an oil change. Turned out that when they evacuated the AC, it must have been done improperly. I had to add 8 oz of oil to the system, vacuum and recharge in my driveway. Problem solved....They still act like I'm wrong and insist there was a leak! Truck went back in for an oil leak. They insisted there wasn't a leak and that the oil was caused from trying to figure out the compression issue. Steam clean. No! I insisted and they discovered a plug leaking. A plug that was part of the rebuild...but that they hadn't replaced. Needless to say, they fixed it. Not even an apology for their issues. They still insist AC must have had a leak and that they didn't do anything wrong. Nearly 3 months later my AC is still fully charged. Unfortunately, my Jake's still cut off randomly. This place was a nightmare and still is. I've dealt with other Cummins shops on my other unit and have had great experiences. I've lost an immense amount of revenue because of crappy diagnosis, bad follow up and horrible job completion. Lol....this shop is the nearest Cummins to my home.
• WW

  William

  Dec 4, 2016
  5.0
  I've been buying parts here for years. They know what they are doing and get you in and out.
• CS

  Chris Sady

  Jul 23, 2013
  1.0
  We gad problem on the road I have send my wife to buy a party for the truck that we haven't used they charged us 25% restocking fee which they d didn't disclose to my wife total rip off. In disclosure it said on returns, so I wanted to exchange for other parts they said I can't do that, I told them that it does not say anything about that. Wont buy gere again. App around before you buy look up comm par same pay 500 cheaper. There's an act on parts being sold not at marked up costs

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