Great guys that run this place. They went above and beyond by staying after hours to make sure my transmission was build. Very knowledgeable when it came to my 2000 dodge ram. They didnt try and over sell me on a build that I didnt need. Great prices compared to other shops. Would recommend them to anyone.

This shop still has accountability, the best customer service, integrity and produce the best rebuilt transmission going thanks!!

Super Great Guys and a Super Fast Turn Around! Estimate was spot on. These guys know what theyre doing. Two Thumbs Up & Five Stars!!

I would give six stars if I could. Matt is a true honest business owner which is very hard to find.. he has been working on my truck for a few years now and I would trust anyone with my motor and transmission build..my truck works hard and plays hard thanks to Matt and his team!!

Been having car issues so I called tier one diesel. Fixed my overheating issues and my ac has never blown cold air so I’m a blessed mom. Same day fix, and amazing service. Highly recommend!

Matthew just built the 48re in my 2007 Dodge. The transmission is great and made an enormous difference in the way the truck drives, especially with the EFI Live tuning from Hardway. I would absolutely recommend Tier One Diesel for anyone looking for quality, honest and timely work. Matthew is a straight shooter and will take care of you.

Matthew is very talented at what he does. He did a diesel conversion on a Toyota 4 runner for my husband. The work was done well in a timely manner and an affordable price. Very communicative, knowledgeable, and friendly person. Wed definitely do business here again.

Huge thanks to Tier one Diesel for doing the timing in my truck! Runs so much better now!! Great guy, He took the time to allow me to ask questions and learn the process which is always appreciated!.. He also let me know if I ever had any problems with that degree of timing, he would reset it for me!Great guy, Very knowledgeable,Very honest!Highly recommended!

Matt built my transmission and did an excellent job. He also took my cummins from mild to wild. Very knowledgeable and humble as they come. Id say my money was well spent!!

Second to none. Phenomenal work and transmission performs like a champ

High quality work here folks. Matthew at Tier One will get the job done for you right and the first time with no corners cut. This guy does great work and I cant recommend him and higher. Thank you!!

Matt is super knowledgable, down to earth dude and very good at what he does. I am very happy with my transmission rebuild/upgrade.

Awesome customer service. My truck was broke down he came and picked it up and rebuilt that transmission and hauled it back to me. Its been great ever since. I would recommend him to anyone.

I came to Matt with slippage in my second gear on my 04 cummins. He was knowledgeable, great priced and honest. The work was done in a quick timeframe for what needed to be done and with how busy the shop is. I took the truck on a long road trip(4200 miles) half of it was towing a 30ft travel trailer and the transmission is performing very well still with no issues. Id HIGHLY recommend Tier One for any cummins needs! Ill be going back to have a airdog system installed before we leave for our full time travels. THANKS MATT for doing a great job on the transmission!

Awesome service! Brought my truck in for control arms and was done the next day! Will be going back for any future needs

Very unprofessional. Had an appointment and no one was there when I showed up!!!

Awesome service i had Matt build me a stage 2 transmission and Im super happy with it . He definately stands behind his product and will go above and beyond to make sure everythings right . Very happy customer

Matt at Tier one did a fantastic Job on my Cummins!

Doesnt know anyrhing about ford 6.4 diesel