Your truck’s transmission plays a key role in how your vehicle runs. It controls how your truck shifts gears, allowing it to move forward or backward smoothly and safely. Whether you drive short routes or long hauls, a healthy transmission is critical to performance, fuel efficiency, and your ability to stay on schedule. If your truck is slipping gears, shaking, leaking transmission fluid, or making unusual grinding noises, it could be a sign that your transmission needs attention.
At United Trailer Maintenance, we specialize in repairing and rebuilding transmissions for commercial trucks of all sizes. Our experienced technicians work on both automatic and manual transmissions, and we service everything from light-duty delivery trucks to heavy-duty 18-wheelers. We start with a full inspection to find out what’s wrong — checking fluid levels, clutch systems, torque converters, gear sets, and electronic sensors. Once we understand the problem, we explain your options clearly and begin the repair process using high-quality parts and industry-approved methods.
Choosing the right repair shop matters. At United Trailer Maintenance, we go the extra mile to deliver quality, speed, and service you can count on. Here’s what sets us apart:
We’ve been delivering trusted truck and trailer repair services for over six years.
Our team is trained, experienced, and committed to quality workmanship.
We know time is money — that’s why we work quickly without cutting corners.
No hidden fees or surprise costs — just fair pricing and honest estimates.
Whether you have one truck or a full fleet, we offer dependable service every time.
Call or text us anytime — we make booking and support simple and stress-free.
Semi Truck Transmission Repair The transmission is one of the most important parts of a semi truck. It allows the vehicle to shift gears smoothly, giving the driver control and helping the truck perform efficiently under heavy loads and long-distance hauls. Over time, the transmission can wear down, leading to problems like gear slipping, delayed shifting, fluid leaks, or unusual noises. When these issues happen, it’s critical to get them fixed quickly to avoid serious damage or unexpected breakdowns.
At United Trailer Maintenance, we specialize in semi truck transmission repair. Our expert technicians have years of experience working on both manual and automatic transmissions. We use advanced diagnostic tools to find the exact cause of the problem and perform accurate, reliable repairs. From minor adjustments and fluid replacements to complete rebuilds, we provide solutions that restore smooth shifting and dependable performance.
By investing in proper transmission repair and routine maintenance, truck drivers and fleet owners can avoid costly repairs down the line, extend the life of their trucks, and reduce downtime. Our goal is to keep your truck moving safely and efficiently — helping you stay on the road and on schedule with confidence.
OUR PRICING
Have questions? We’ve answered some of the most common ones below to help you understand our services better. Don’t see your question? Feel free to call or text us anytime!
We work on all kinds of commercial trucks and trailers, including semi-trucks, box trucks, flatbeds, and more.
It depends on the issue, but we always work quickly and keep you updated. Most common repairs are done the same day.
Yes! We offer maintenance and repair solutions for small and large fleets. Contact us for custom plans.
We handle axle repairs, lighting and wiring issues, structural damage, brakes, suspension, and more.
Costs vary based on the repair type, but we always provide clear estimates before starting any work.
Yes! We can set up regular maintenance schedules to help prevent costly breakdowns.
Yes, our team is made up of skilled, experienced technicians trained to handle all types of truck and trailer repairs.
We do offer limited mobile/emergency repair services depending on the location and issue.
Just call or text us at +1 (562) 806-2372, or visit our shop directly. We’ll get you booked in quickly.
Got questions or need a repair? Our team is ready to help — fast, honest, and 24/7.
Don’t wait — get in touch today!