Walk in with my non working TCM for my 2013 duramax and walk out 15 min later… plug and play with no issues!!!! Great service from Ryan’s mom!!!

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I found Ryan’s on YouTube and they are close by. They did an excellent job adjusting the valve lash on my 2012 cummins. Provided a detailed services report as well. I will definitely return for future services and would recommend them.

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Bought a TCM and it was shipped fast arrived fast. Plugged in and works great. Great place great service. Thanks Ryan.

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Great group of people, purchased a TCM for my 2011 from them; within 24 hours I was back on the road and running again! Thanks guys

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Excellent communication, smart diagnostic approach, honest and reasonable. Would use them again without hesitation.

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Ryan’s Diesel service is a company you can trust. Very knowledgeable. I’ll be bringing all my work to them.

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I’m a repair facility in WV. There is not many parts or services locally. We have to outsource many services. There has been many problems with other companies. Not the case with Ryan’s. Very fast shipping especially considering they had to program the TCM.

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Great customer service, great products, great packaging, and quick shipping. Ordered a turbo and downpipe for my lml duramax and was shipped and delivered same day! Anything I need from here on out I’m getting from these folks if they got it.

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2012 GMC Sierra 2500 HD SLE Duramax diesel. Had U0101 code. Plus P150C code. Had stabilitrak and traction control lights on dash. Ordered pre programmed from Ryans. Got it installed and bam back on line. No issues. Highly recommend.

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Bought a TCM for my husbands 07 duramax. Plugged it in and truck fired right up. Prior to the new TCM truck had been sitting for three months would not even try to start. Very impressed with the product and service.

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Nothing but quality here. I have an 06 Duramax and it had a bad TCM. I tried a repair service and got scammed. I tried a used unit and couldn’t get it vin programmed. I ordered a new TCM from Ryan’s Diesel Service and it came in 2 days.

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They stand behind everything they say and back it up with actions when things go wrong. There are one of the very best in the business. Truck master recommended them. MDP out of Jackson MI works with them. A good set of hands you are in.

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Probably the Best Customer Service out, spoke with Ryan the owner personally, very knowledgeable, shoots it straight, and makes one hell of a product. I’d recommend his turbos to anyone!

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RDS is a solid company ran with the best customer service that I’ve ever dealt with in the diesel world. From the front desk staff to Ryan himself. They are stand up people who actually care about their clients and are extremely knowledgeable.

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Can’t say enough good things about Ryan’s Diesel Service. The staff is friendly, puts customers first, and delivers answers when you have questions. Took my 6.7 to them before a big trip because it was making injector noise. They assured me it would run great and it did.

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Ryan’s Diesel Service provided outstanding service. The work was completed promptly and Ryan himself was very kind and professional throughout the entire process. I will definitely return in the future. Highly recommended!

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Was having TCM issues on my 2014 GMC duramax ordered one from Ryan’s Diesel Service was the cheapest plug and play TCM I could find in a rush. Sent them my vin they had it shipped out same day. Plugged new TCM in and fired right up.

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Amazing service – timely, reasonable prices compared to other quotes I got, and Ryan was very kind!! Would return and recommend

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This is my second turbo I have bought from them 2 different type of trucks and they have been great. This last one is for a F250 6.0 with a 9blade and let me tell you it’s turning heads and making people roll their windows up it’s very loud and I love it. Highly recommended

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I needed a TCM for my 2010 Chevy 2500HD. I ordered it online and I had the new programmed TCM in 2 days. I installed it and it worked perfect.

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Purchased a truck with one of their turbos. I had a few questions. I am not sure the name of who I talked to but it was very apparent his knowledge of his product as well as how to provide exceptional customer service was well beyond what is typical in the world today.

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These guys know what they are doing. Never had a bad experience with them. Top diesel guys.

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Ryan and his team were great! I drove from southeast Michigan to Wisconsin to have them do head studs, gaskets and injectors. Tyler from RDS was my point of contact throughout the process he kept me informed on progress and updates.

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These guys are top notch! Had a defective vane position solenoid in my new 64mm turbo, not there fault was on Garrett. However I sent the turbo back they repaired same day and next day aired it back to me. Less then a few days turn-around. Would highly recommend Ryan’s Diesel Service.

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RDS is the only shop I would ever recommend to provide anyone with their diesel needs in the area and surrounding states. From higher performance builds to fleet situations, Ryan and his crew are absolutely top notch and have no issue at all communicating.

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Just installed a 64mm turbo on my lbz and couldn’t ask for it to be any better, awesome customer service here

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Talked to Kerri about head gaskets on my lly. Lady was a wealth of info and input! Down to earth! Very knowledgeable! Just by chance thats my name Carey. Thanks again Kerri!

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Great job cleaning and pressure checking the heads on my lb7. Super nice people, they know their stuff that’s for sure

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Ryan and his employees were great answering any questions I had about my 64mm turbo for my 2013 duramax. I would highly recommend. Thank you for the great product it was shipped quickly. Installed the turbo over the weekend it sounds awesome.

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I run a shop in Texas. We were in a bind needing a quick order, the RDS team went above and beyond to fulfill my order for my customer. Companies like these make my company better. SUPERB customer service, and product. Thank yall!

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Bought a TCM for a 2006 duramax took 5 min to install was actually a true plug and play and works great very good service

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Ryan will always tell you what’s best options are for what you are needing. Never will try to push you to buy things that aren’t necessary. Always does the best work and I will never take my truck somewhere else!

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Ordered a TCM for my 2011 Chevrolet 2500HD Duramax. Item was shipped same day I ordered and I received it promptly. Installed new TCM and truck is performing like new again. Great product, great price, and great customer service from Ryan’s Diesel Service.

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Ryan and his crew did a great job with studding the heads on my LLY, replacing the injector pump, and installing the new turbo. Love the sound of the new turbo. Hope to drive up there next year if you have a truck show. Thanks again for all the work.

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This is truly a top notch business. Absolutely no one needs to hesitate using Ryan’s diesel service. They honor any warranty work that might come up and they are extremely quick on shipping items out. They respond very quickly to emails as well.

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Called to get a quote on my LLY Duramax for headgasket repair, even on the phone Ryan did his utmost to help me and very knowledgeable in the diesel industry. I would be more than happy to make the drive from south Georgia to Wisconsin very soon. I would recommend Ryan and his team to anyone for diesel service!

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Excellent service! Truck broke down the day before vacation, staff was super helpful and were able to ship a TCM out quickly. We were able to be on the road on time the next day. Thank you for saving the day!!!!

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Outstanding service contact them on a Saturday afternoon with an incoming snow storm in need of a TCM. They were more than willing and happy to help me out. They had it ready for me and waiting before I got to the shop. Called lot of other shops and dealers and none was willing to help except for Ryans.

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Ryan is an awesome guy and always fixes our fleet vehicles with the quickness. You need diesel work you need to go here period.

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I recently received my Ryan’s 68mm street turbo and installed it. Very knowledgable and helpful answering any questions you may have. I can honestly say I think its probably the best experience I’ve had ordering anything. If you call for assistance it isn’t automated it’s the real thing. I give Ryan and his company a five thumbs up.

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Ryan took the time to talk to me about my goals for my truck and recommended the cheaper of the two turbo options I was considering because it was a better fit. A lot of companies would upsell in this situation and he suggested what was best for my application.

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Ryan’s diesel service really know what’s going on in today’s diesel market. Ordered a TCM for my 2011 lml and showed up next day. Had no issues with new TCM and am pleased with pricing. Would recommend any product of the company to anyone looking for performance parts that they can trust.

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I spoke with Ryan about my truck and the problems it was having as well as additional things I wanted them to look at and he was super helpfull and made sure to address all of my concerns. I left my truck with them and look forward to getting my diagnosis and options to get it fixed.

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These guys were great I came in to ask some questions and I believe I spoke to a younger guy named Ryan and he took the time to answer every question I had and was very very helpful. I would recommend anybody to go there thank you so much you guys for the time you took to help me out someone you’ve never met I greatly appreciate it

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Cannot imagine taking my diesel vehicle anywhere else besides Ryan’s Diesel Service. Great customer service, friendly staff, and my vehicle was completed in time well before I anticipated it to be.

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Had problems ordering online called and got great customer service. Ryan answered all my questions and even went the extra mile to place the order for me. I cannot recommend this man enough.

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What an amazing company, built our trans on 2006 duramax and was blown away with there product. There customer service is top notch!!!! Will be having them build my all my trans.

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2010 duramax with the famous U0101 TCM not communicating. After reaching out to several Diesel Shops in NC I got the run around that the truck would have to be towed into the shop to replace the TCM. After doing some searching around I found Ryan’s Diesel Service and they were able to help me out with a plug and play TCM.

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Ryan did a great job on my husband and I’s truck!!! Very grateful for an educated mechanic in our area

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Ryan, Mark and crew are the most knowledgeable Duramax and GM drive train specialists in the area. Totally honest and reliable. Five Stars all the way!

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Ryan is a top notch guy. Was more than willing to answer my many questions and turn around time was lightening fast. I will be taking my vehicles here from now on, no questions asked.

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Glad I was recommended to Ryan! Wish I found this place sooner, when the super cold weather started in late December my 2008 Chevy lost power, Ryan and crew took care of it at very reasonable price! Will definitely be taken truck back with any future maintenance or problems.

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Must say Ryan & Mark (Kodiak Truck) are one of the most knowledgeable and down to earth guys very respectable. They know there stuff I will be taking my trucks back to them in the future whether it’s efi live tuning or transmission/transfercase updates and builds they have my business! Fast and Reliable service best in area!

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I’ve dealt with Ryan and Mark a few times now, between EFI live, Allison and transfer case expertise these guys are top notch in they’re expertise and knowledge. Not only did they save me money but also got me back on the road in a days time.

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