Diesel Repair in Simi Valley, CA

Powerstroke, Cummins, or Duramax - there is no job too big or small for the team at C&M!

At C&M Automotive & Transmission in Simi Valley, CA, our customers bring in trucks, family cars, hot rods, and everything in between! We love working on all vehicles, but pride ourselves when it comes to diesels. A diesel car or truck has very specific needs when it comes to service or repairs - making it important that you bring your diesel vehicle to a specialist to quickly diagnose and fix whatever is ailing your car, truck or SUV.

Ventura County’s Light Duty Diesel Experts

Unlike a gasoline-powered engine, your diesel engine relies on compressed air and timely fuel injection to keep you moving. Not all repair shops are equipped to handle these variances, but the team at C&M has you covered - whether you trying to troubleshoot your low fuel economy on your diesel truck or find you’re having to crank the engine a few times over before it starts. Our service doesn’t stop there, we know that what our customers value more is peace-of-mind. That’s why the team at C&M offers a comprehensive 24-month/24,000-mile warranty, standing behind the services we perform so you can rest easy.

Our expert technicians are here to repair and maintain the following diesel vehicles:

  • Ford: F-Series, E-Series, Transit Vans, Excursion, Expedition
  • Dodge: RAM 2500-5500, Classic and Chassis, Sprinter, Transport Vans
  • Chevy: Silverado, Colorado, Express, Suburban, Tahoe
  • GMC: Sierra, Yukon, Denali, Canyon
  • Land Rover: Range Rover, Discovery, Defender
  • BMW, Mercedes-Benz, Porsche and many more!


If your diesel vehicle needs general maintenance or running strangely, bring it to the professionals who understand how to do the job properly. C&M Automotive & Transmission, the trusted diesel repair experts in Simi Valley, CA, have you covered. With years of experience servicing diesel vehicles, our team is fully capable of performing any service you need with both quality and precision. In our hands, you can rest assured knowing that your diesel repair will be done right. Schedule your service appointment by giving us a call at (805) 522-1759 or by visiting us on 4292 Valley Fair Street. We'd love to meet you and see how our services can bring the best out of your diesel car or truck.

  • AAA
  • AC Delco
  • ASE
  • ATRA
  • BBB
  • BG Products
  • Jasper
  • MechanicNet
  • Repair Pal Certified
  • Technet
  • ARI
  • Simi Valley Chamber of Commerce