Chevy & GMC diesel repair in Richland, WA
Duramax
GM has put the 6.6L Duramax V8 in its heavy-duty Silverado and Sierra trucks since 2001. We work on every version, from the LB7 to the L5P.
Silverado and Sierra 2500HD, 3500HD
Call (509) 375-9997| Engine | Model years |
|---|---|
| LB7 | 2001 – 2004 |
| LLY | 2004½ – 2005 |
| LBZ | 2006 – 2007 |
| LMM | 2007½ – 2010 |
| LML | 2011 – 2016 |
| L5P | 2017 – today |
What we do on your Duramax
- Diagnostics and drivability problems
- Injectors and injection pumps
- Turbo repair and replacement
- Glow plugs and glow plug harnesses
- Engine rebuilds and seals
- Exhaust work
- EFI tuning and Dynojet chassis dyno
- Scheduled maintenance and oil changes
Chevy & GMC owners on the shop
“I’m extremely happy with my experience at Diesel Performance Unlimited. The staff is knowledgeable, friendly, and honest. They do great work, stand behind what they do, and make you feel confident that your vehicle is in good hands. I originally took my truck to another shop because it was still under warranty. They never really explained what was going on, and five years later, I was still dealing with the same problems. Diesel Performance Unlimited finally fixed the issue and took the time to explain what was happening, what went wrong, and why I was having those problems. I finally have answers and a truck that’s running right! It’s hard to find a shop you can truly trust, but these guys are exactly that. Honest work, great service, and knowledgeable people who genuinely care. I won’t take my truck anywhere else. I highly recommend Diesel Performance Unlimited to anyone looking for quality work and a shop they can trust!”
What diesel owners say
4.9 stars from 36 Google reviews“These guys were incredibly professional, very personable and did outstanding work. I really appreciated there care and concern!! Thank you Chad and your DPU Team.”
“My Truck was starting to have issues as I was traveling through Richland WA. I came to Diesel Performance Unlimited as they were opening. I explained to Jesse that I was traveling for work and really needed to get to Nevada. He didn’t hesitate to offer help. And he gave me a ride to and from the campground I was parked at. He went above and beyond. I had gone to the dealership they couldn’t help me. I kept going down the list of repair shops and was told maybe in 2-3 weeks. Jesse troubleshot my problem and fixed it quickly and at a very reasonable price. Thank you for your help.”
“Jessie is extremely knowledgeable and a man of integrity. Ive used him a few times and have always walked away with a smile. Had a few unfortunate things happen to my truck but he took responsibility and fixed it all. 10/10 would recommend!”
“What a great experience very professional, knowledgeable and had the work done a day earlier than expected at the quoted price and they included a full vehicle inspection with a price list and quotes and after 24 years it was as you might expect but she runs better than the day I drove it off the lot 24 years ago. Thank you, Diesel Performance Unlimited”
“Had my truck towed to Diesel performance. They got to my truck quickly and fixed the issues the next day. Pricing was great and I’m happy to have found them. Highly recommend.”
Bring your Duramax in
1990 Saint St, Richland. Monday to Friday, 8 AM to 5 PM.
Serving the Tri-Cities: Richland, Kennewick, and Pasco.