Truck Transmission & Clutch Repair Services in St George, UT

Experiencing hard shifting, slipping gears, or loss of power in your semi-truck or heavy-duty vehicle? At Amoretti Diesel Repair and Service in St George, UT, we specialize in transmission and clutch repair to keep your truck running smoothly.

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Professional Truck Transmission Repair

Your truck’s transmission is responsible for power delivery, smooth shifting, and overall drivetrain efficiency. A failing transmission can lead to loss of torque, increased fuel consumption, and breakdowns. Our comprehensive transmission repair services ensure your truck stays in peak condition.

Our Heavy-Duty Transmission Repair Services Include:

  • Transmission Diagnostics & Troubleshooting – Using OEM scan tools to identify fault codes and shifting issues.
  • Gear & Synchro Repairs – Fixing grinding gears, difficulty shifting, and transmission noise.
  • Transmission Fluid Changes & Flushes – Extending transmission life with routine fluid servicing.
  • Clutch & Flywheel Replacement – Fixing slipping, sticking, or worn-out clutches for smooth power transfer.
  • Clutch Adjustment & Hydraulic System Repairs – Servicing clutch linkages, slave cylinders, and master cylinders.
  • Heavy-Duty Transmission Upgrades – Performance tuning and stronger transmission builds for fleets.

If your truck is struggling with shifting, slipping gears, or loss of power, we’ll inspect and repair the issue fast.

Why Utah Chooses Us for Semi-Truck Transmission & Clutch Repairs

At Amoretti Diesel Repair and Service, we understand the importance of a reliable transmission and clutch system for power efficiency and performance. Here’s why truckers and fleet owners trust us:

Certified Transmission Specialists – Experts in manual and automated manual transmission (AMT) repairs.

OEM-Quality Parts & Fluids – Using high-grade transmission components for durability.

Fast Turnaround & Minimal Downtime – Getting your truck back on the road quickly.

Fleet Service Available – Transmission maintenance and clutch replacements for fleet vehicles.

Competitive Pricing – Affordable clutch and transmission rebuild services.

Supporting Drivers Throughout St. George

Transmission and clutch problems can affect shifting performance, reduce efficiency, and lead to costly downtime. Amoretti Diesel Repair and Service helps owner-operators and fleets throughout the St. George area with dependable transmission and clutch repair services that restore reliable operation.

Located near I-15, we support customers across Washington County and Southern Utah with accurate diagnostics, quality repairs, and experienced service for manual and automated manual transmissions. Our goal is to keep your truck shifting smoothly and performing reliably for the miles ahead.

Contact Us for Transmission & Clutch Repair Now: Call 435-773-8511!

If your truck’s transmission is failing, gears are slipping, or your clutch is wearing out, call Amoretti Diesel Repair and Service at 435-773-8511 today! We’ll diagnose and repair your transmission or clutch system quickly.

FAQs

How Do You Get to Amoretti Diesel Repair and Service in St. George?

Commercial drivers can find Amoretti Diesel Repair and Service at 3676 S 1700 E, St. George, UT 84790. The location is convenient for truck owners and fleet managers needing transmission & clutch repair in St. George. Drivers heading into St. George from the north or south can use I-15 as the main interstate through the city. River Road provides local access toward the shop once drivers reach southern St. George.

As you get closer to the shop, the St. George Regional Airport and Desert Color are recognizable landmarks in the area. Drivers can use these reference points to help identify the surrounding area before reaching Amoretti Diesel Repair and Service.

What Areas Do You Serve for Transmission & Clutch Repair?

We provide truck transmission repair services in St George, UT, and surrounding areas, including:

Washington, UT; Hurricane, UT; Santa Clara, UT; Ivins, UT; La Verkin, UT; Toquerville, UT; Leeds, UT; Springdale, UT; Enterprise, UT; Cedar City, UT.

What Are Signs My Truck’s Transmission Needs Repair?

Common signs of transmission failure include:

  • Slipping gears or delayed shifting
  • Grinding or clunking noises
  • Loss of power when accelerating
  • Check engine or transmission warning light
  • Burning smell from overheating transmission fluid

How Often Should My Truck’s Transmission Fluid Be Changed?

Most heavy-duty transmissions require fluid changes every 30,000-60,000 miles, depending on manufacturer recommendations and operating conditions.

Can You Replace My Semi-Truck’s Clutch?

Yes! We replace, adjust, and service heavy-duty clutches for manual and automated transmissions.

How Can I Get My Truck’s Transmission & Clutch Repaired?

Call 435-773-8511 or visit Amoretti Diesel Repair and Service in St George, UT, to schedule a transmission inspection and repair service.

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REPAIRS

Our Heavy-Duty Truck Repair Services

We specialize in engine repairs, transmission services, brake system repairs, cooling system maintenance, and electrical diagnostics. If your truck is experiencing performance issues, overheating, or brake failures, trust our certified mechanics to restore it to optimal working condition.

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REVIEWS

Testimonials

Here's what our customers are saying, feel free to leave us a review!

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Charles Snmith

Great service, and a pleasant surprise. Honest and realistic on their response time, great communication as the repair progressed. Common sense diagnosis, verification of the repair, and fair pricing. Could not ask for anything better. If you need help in the St George area, Amoretti is the answer.
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Botash Enterprise

We needed a DOT inspection to be done to one of our trailers and theese guys were fast and cooperative. Greatly appreciate it and recommend it.
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Ken H

Great service….friendly and knowledgeable staff…Amoretti Diesel is a great place to have your diesel serviced.
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Brayden Peacock

Quick service and reasonable prices. Will come here again for my trailer needs!
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Charlie Stone

I called 23 different companies for help with a stranded truck, and Amoretti Diesel were the only ones able to assist. After spending nearly six hours on the phone trying to find help, I finally called Amoretti. Within 25 minutes of ending the call, they had my truck back on the road. Exceptional service when I needed it most.
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Megan Glover

Our pneumatic lines on our class A coach kept melting and bursting.   They got us in immediately, found a spot that the turbo wasn't connected to the exhaust due to a loose clamp.   They got a new part, welded it on, rewrapped all the wires who's protective mesh had melted and sent us on our way.   Incredibly knowledgeable and so kind.  Could not be happier with their work.
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Kent Call

Scheduled me in quickly and took my truck right in. I will definitely be back. Great service!
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Colton Johnson

I had some issues with a dump truck it was in and out within 3 hours same day great service and everything I asked to be done to it was done.
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Admin

Amoretti Diesel is the best shop in this area. We did an injector replacement quick and reasonable price . Thank you.
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Chris Bowman

I've been getting all my trucks fixed here for years and I won't go anywhere else. These guys always take care of me and are honest and fair. I highly recommend them!
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Great shop to work with , honest and fast working people. They will go above and beyond to get you back on the road. Our company has used them every time we were in the area, they never disappoint.
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Honest and quick response for road assistance. Cascadia in derete mode,they went there as soon as possible and fixed the problem with decent charge for road assistance. Thank you,good job.
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Where to Find Us