Granbury's Diesel Specialists

We Build Diesel
Power That Lasts

From routine maintenance to full performance builds, 3M Diesel Care & Performance delivers the kind of craftsmanship that keeps your rig on the road — mile after mile, job after job.

Schedule Service Our Services
1817-964-8890 Call Now
125 Corporate Dr Granbury, TX 76049
Diesel engine bay close-up showing clean, professional work
Trusted Local Shop
⚙ Diesel Engine Repair ◆ 🔧 Performance Tuning ◆ 🛢 Fuel Systems ◆ 🔩 Diagnostics ◆ ⚡ Turbo & Boost ◆ 🛠 Brake & Suspension ◆ 🔋 Electrical Systems ◆ ⚙ Diesel Engine Repair ◆ 🔧 Performance Tuning ◆ 🛢 Fuel Systems ◆ 🔩 Diagnostics ◆ ⚡ Turbo & Boost ◆ 🛠 Brake & Suspension ◆ 🔋 Electrical Systems ◆
What We Do

Full-Spectrum Diesel
Care & Performance

Whether you're hauling across Texas or running equipment on a job site, we keep your diesel working at its best.

Engine Repair & Overhaul

Complete diesel engine diagnostics, rebuilds, and performance upgrades. From minor fixes to full recon — we do it right the first time.

PowerStroke · Cummins · Duramax

Fuel System Service

Injector testing, cleaning, and replacement. Fuel pump diagnostics and repair. We keep your fuel delivery clean and efficient.

Injectors · Pumps · Filters

Performance Tuning

Custom engine programming and tuning for more torque, better fuel economy, and smoother operation. Get the most from your diesel.

HP Tuning · ECU Reflash · Tunes

Diagnostic & Electrical

Advanced scan tool diagnostics and electrical system troubleshooting. We find the problem fast so you're back on the road sooner.

OBD Diagnostics · Wiring · Sensors

Brake & Suspension

Heavy-duty brake service, rotor resurfacing, and suspension repair built to handle the weight and stress of diesel work trucks.

Brakes · Shocks · Air Suspension

Pre-Purchase Inspections

Buying a used diesel? We'll give it a thorough inspection before you commit — so you know exactly what you're getting into.

Inspections · Reports · Advice
Mechanic working on a diesel engine in a well-lit workshop
Close-up of diesel truck engine components
Locally Owned & Operated
About Us

Born From
The Diesel Life

3M Diesel Care & Performance isn't a chain shop or a franchise. We're Granbury-based diesel mechanics who understand what it means to depend on your truck — whether you're running a work fleet or your personal rig.

Our team brings years of hands-on experience with every major diesel platform. We treat every vehicle like it's ours, because we know the frustration of a breakdown and the value of a job done right.

All major diesel brands serviced
Modern diagnostic equipment
Honest, upfront pricing
Fast turnaround, no unnecessary delays
Why 3M Diesel

The Difference Is in
The Details

01

Expertise You Can Count On

Our technicians know diesel inside and out. We've spent years working on everything from daily drivers to heavy equipment — and we stay current with the latest tech.

02

No Surprises, Ever

We explain what needs to be done, why it matters, and what it'll cost — before we touch a bolt. No hidden fees, no upselling, no guessing games.

03

Built for the Long Haul

We don't cut corners. Every repair we do is built to last, because we know your diesel is the tool you depend on every single day.

04

Your Neighborhood Shop

We're right here in Granbury. When you bring your diesel to 3M, you're not just another ticket number — you're a neighbor we want to see again.

Your Diesel Deserves
Better Than Guesswork

Give us a call or stop by the shop — we'll walk you through what your truck needs and get you scheduled fast.

(181) 796-8890 Send a Message
Get In Touch

Let's Talk
About Your Diesel

Have a question or need to schedule service? Reach out however works best for you — we respond quickly.

Address 125 Corporate Dr
Granbury, TX 76049-7470

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