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.

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 💪🏼

These boys soak it all in. Questions and helping hands, just don’t know one day this may be them if that’s what they cho...
05/15/2026

These boys soak it all in. Questions and helping hands, just don’t know one day this may be them if that’s what they choose. Hope everyone has a Good Friday.

Little bit of heated seat work.

Another day Another duramax! This one is getting a S&S CP3 conversion and some small upgrades 😎.
05/14/2026

Another day Another duramax! This one is getting a S&S CP3 conversion and some small upgrades 😎.

05/14/2026

Those 4 empty parking spots (that emptied just long enough to catch half a breath) always mean we’re about to get ham slammered in about 2 hours.

WERE CRANKIN THESE HOGS GOBBLESS

Another Duramax in forFleece performance heads mahle head gaskets and studs ! Call us today to get on the schedule!
05/12/2026

Another Duramax in for

Fleece performance heads
mahle head gaskets
and studs !
Call us today to get on the schedule!

Alittle Lbz duramax fun to end this week! New fleece performance headsHead studs Mahle head gaskets Water pump and glow ...
05/08/2026

Alittle Lbz duramax fun to end this week!

New fleece performance heads
Head studs
Mahle head gaskets
Water pump
and glow plugs !

Call us today to get on the schedule for all your vehicle needs !

Back at it again this week! With a 6.7 cummins getting studs and head gasket. And LML duramax getting a rear main seal!G...
05/05/2026

Back at it again this week!
With a 6.7 cummins getting studs and head gasket.
And LML duramax getting a rear main seal!

Give us a call today to get on the schedule no matter how big the job is!!
615-215-2481

04/30/2026

Been a busy week. Not one cab but two cabs in 3 days on 1 lift. Hope everyone is having a good week. Everyone seems to love the videos.
Major to minor repairs we don’t care. Give us a call!
615-215-2481

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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