Tomlin Diesel LLC

⭐️⭐️⭐️⭐️⭐️ Tomlin Diesel in Franklin, TN is the real deal. I brought my truck in with an issue on the header near the DEF tank, and these guys nailed it. From the moment I showed up, they were professional, honest, and clearly knew exactly what they were doing. They took the time to explain the problem, didn’t try to upsell me on anything I didn’t need, and got the repair done right the first time. The quality of workmanship was top-notch, turnaround time was solid, and the pricing was fair—especially for the level of expertise they bring. It’s hard to find a diesel shop you can truly trust, but Tomlin Diesel has earned it. If you’ve got... Read full review

I can’t say enough good things about Tomlin Diesel LLC. After a long 9-hour drive down to Tennessee, I noticed a transmission line leak and was stressed about being stranded so far from home. They got me in immediately for a diagnosis without hesitation. From the moment I walked in, everyone was friendly, professional, and genuinely willing to help — but Jason (Tomlin) really stood out. His knowledge was next level. He didn’t just identify the issue quickly and accurately, he also pointed out improper installation techniques from previous work done by another mechanic back in Michigan. That level of honesty and expertise is something you don’... Read full review

Tomlin Diesel is hands down the best. I called to ask a couple questions and spoke to Jason Tomlin. He listened to my questions and offered to come to our house and check out GMC 2500HD diesel. It wasn’t starting and with the below freezing temperatures I was concerned with damaging something. He arrived with everything to diagnose the issue. It was determined to be the batteries. He had anticipated that and had two with him that he quickly replaced. He then checked the diagnostics again and reset the electronics. It was fast, professional and beyond what I expected. We will be Tomlin Diesel customers for life.

Rolled into Franklin on an extended road trip late with a cooling fan code issue on my 2500 HD Duramax. Called Tomlin Diesel early the next morning and told them our situation. Friendly, responsive, professional and got the job done in a timely manner to get us back on the road. Very reasonably priced.