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.

Professional Truck Transmission Repair in St George, UT
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 Choose 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.
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
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.
Heavy-Duty Truck Repairs in St. George, UT
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.
Testimonials
Here's What our customers are saying, feel free to leave us a review!
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