Short Mountain Diesel

Short Mountain Diesel Short Mountain Diesel is a mechanic shop in Smithville TN specializing in performance & maintenance. Now offering tint services!!!

Locally owned and operated in Smithville by Abigail & Cody Johnson.

08/28/2026

Quit blowing holes in my shop!

08/18/2026

Future parking lot menace

08/13/2026

Nothing like the wind in your hair 🙂‍↔️

07/29/2026

There’s a select few special customers we’ll venture out of the usual for. This will definitely NOT be the norm, but was a pretty fun little build to wrap up for some of our favorites.

Volkswagen GTI MK8 with a stage 2 build
- upgraded intercooler
- high flow cats
- upgraded intake
- custom programming to add about ~120 hp

New transmission along with a DCR conversion and disaster kit to get this one back on the road 🤌🏼
07/28/2026

New transmission along with a DCR conversion and disaster kit to get this one back on the road 🤌🏼

07/13/2026

Overhaul on this one. He wanted a work truck that would perform and be built to last, and sit right doing it.
✅ Titan Turbo 9-blade
✅ DCR Conversion
✅ Welded crank
✅ ProPower Intercooler Piping Kit
✅ Full recalibration
✅ Kryptonite leveling springs
✅ Full service and she’s been burning up the roads since.

07/02/2026

Appreciate the review! Glad we could help out!

Sometimes I wouldn’t believe this stuff unless I saw it with my own eyes. But in the last couple months, 2 separate Dura...
06/10/2026

Sometimes I wouldn’t believe this stuff unless I saw it with my own eyes. But in the last couple months, 2 separate Duramaxes- an LB7 and an L5P, both had super random intermittent power losses. No codes, no incorrect data, nothing. You know what they BOTH turned out to be?

A fly burned onto the MAF/MAP sensors. The mental gymastics they went through to find this 🤣🤣 that little brownish spot in the middle of the sensor would be the culprit 🪰

B&W gooseneck install on this nice new ford before we head out for the weekend. These short weeks have a way of wearing ...
05/29/2026

B&W gooseneck install on this nice new ford before we head out for the weekend. These short weeks have a way of wearing us out more than the long ones 🤣

Everyone have a great weekend and we’ll see you Monday!

May look like a boring post but actually some fun updates-Got a quick recap of things I’ve added to the shop in the last...
05/19/2026

May look like a boring post but actually some fun updates-

Got a quick recap of things I’ve added to the shop in the last ~ year and have never advertised because I’m the worst at this 🤣

💨NEW MERCH 🎉 after a 2.5 year wait! Finally got around to a couple new designs that are already getting snatched up

💨 AMSOIL & SCHAEFFERS DEALER now in town. If you want to guarantee top notch performance and lifelong quality in your vehicles- whether for work or daily driving, come see us. We usually keep most of the basics in stock but can order anything you might need

💨 B&W TRAILER HITCH DEALER- we now carry and install all B&W products. If you’re needing a gooseneck installed, or want to pick up an upgraded hitch, swing on by!

💨 STAINLESS DIESEL - we now are also a dealer for all stainless diesel products. Our performance side has substantially grown and want to keep adding to our vendor list. We are now at roughly 150+ vendors and aim to keep adding to that.

💨 FULL THROTTLE SUSPENSION - also added to the dealer list

💨 MCGAUGHYS LIFTS - another one added. Been enjoying some builds and will have some cool shots up for everyone to see in the near future

This is all I remember off hand but as always stay tuned and give us a shout for anything and everything truck related! From standard maintenance like a/c or front end work to full blown builds. We got you covered 💪🏼

Address

3205 Nashville Highway
Smithville, TN
37166

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+16154540999

Website

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