21426 N 14th Ave. Phoenix, AZ 85027 | Mon-Fri 8am-5pm Sat: By Appt. | (623) 244-8887
Hiring Diesel Technicians, $5,000 Sign-On Bonus

Truck & RV Repair and Maintenance in Phoenix and the Surrounding Areas

A man is working on a garbage truck in a garage.

Trucks can have a hard life, but at S&K Transmission & Diesel Repair, we make them live longer. Our full service truck repair shop in Phoenix serves all personal, fleet and commercial trucks ½ ton and larger. While this includes Chevrolet truck repair, Ford truck repair, Dodge truck repair and RAM truck repair, we also cater to gas and diesel box trucks, delivery vehicles, emergency vehicles and other commercial fleet vehicles.


To learn more about our extensive services, or when it is time for truck repair in Phoenix, don’t hesitate to give us a call to schedule service.

  • ½ Ton Truck Repair
  • 1 Ton Truck Repair
  • Computer Diagnostics
  • Truck Engine Repair
  • Check Engine Light Repair
  • Truck Brake Repair
  • Driveability Issues
  • Diesel Truck Repair
  • Starters & Alternators
  • Ignition Repair
  • Fuel System Repair
  • Truck Air Conditioner Repair
  • Freon Recharge/AC Recharge
  • Radiator & Cooling System Repair
  • Steering Repair
  • Truck Suspension Repair
  • Duramax Repair
  • EcoDiesel Repair
  • Street Sweeper Repair
  • Bus Repair
  • Box Truck Repair
  • Delivery Vehicle Repair
  • Emergency Vehicle Repair
  • Ambulance Repair
  • Scheduled Truck Maintenance
  • Truck Oil Change Services
  • Truck Tune-Ups
  • Truck Fluid Flush
  • Heating System Services
  • Spark Plug Replacement
  • Glow Plug Replacement
  • Truck Battery Replacement
  • Belts & Hoses
  • Air Filter & Fuel Filter
  • Cummin Repair
  • PowerStroke Repair

½ Ton & Larger Truck Diagnostics

Our shop is equipped with the latest technology to perform computer-aided diagnostics on all trucks ½ ton and larger. These scanning tools, along with the broad knowledge held by our staff of ASE certified truck mechanics, allow us to quickly pinpoint issues and get them fixed fast.


Our goal is to have your truck in and out of the shop as quickly as possible, without sacrificing quality. When trouble strikes, call our team to schedule truck diagnostics in Phoenix.

A person is typing on a laptop computer in front of a car engine.

Gasoline Truck Engine Repair

We know work truck engines are put through the wringer on a daily basis. Heavy hauling and extra miles can take a toll under the hood, have no fear though, our truck engine mechanics in Phoenix are here to help. We perform complete truck engine repair, truck engine replacement and truck engine rebuilding for all ½ ton rigs and bigger. From oil leaks to cracked engine blocks, we fix engines right the first time.


Diesel Engine Repair

Our expert diesel mechanics can perform any service necessary to keep your truck or other commercial vehicle performing its very best. We’ve dedicated years to learning diesel repair on all types of trucks, both big and small. When you need a professional diesel mechanic in Phoenix, look no further. We offer comprehensive diesel truck maintenance, repair and diesel tune ups for all makes and models of trucks and work vehicles, so don’t hesitate to call us, no matter your needs.

RV & Motorhome Repair

If your RV suffers a mechanical failure such as transmission or engine issues, S&K Transmission & Diesel Repair is here to help. We complete full mechanical repair of all sizes of RVs and motorhomes, including Class A motorhome repair. You can count on us for routine maintenance, such as oil changes, and other preventative services, as well as complex RV repair in Phoenix, Glendale, Peoria and the surrounding communities. Our services include motorhome AC repair, RV brake repair, chassis repair, RV engine repair, RV transmission service, heavy duty wheel alignments, steering and suspension repair and air system repair. Our RV repair costs are fair and our services honest, ensuring you get back on the road in a safe and reliable vehicle.

Two men are carrying a large fan in front of a truck.

Full Service Truck Repair in Phoenix

Our full service Phoenix truck repair shop offers bumper to bumper care for all types of trucks. You can count on us for truck brake repair, steering repair, suspension repair, 4x4 repair, radiator repair, cooling system repair, alternator repair, starter repair, ignition repair, check engine light repair, exhaust and emissions repairs, fuel system repair, truck AC repair and any other service required to keep your vehicle safe, reliable and comfortable to drive. Give us a call to request service or a quote from our nearby truck repair shop.

Fleet Vehicle Repair

As a locally owned company, we take great pride in working with other local, regional and national businesses to keep their fleets running strong. Our fleet vehicle service programs cover all types of vehicles, including work trucks, delivery vehicles, municipal vehicles, emergency vehicles, street cleaners, box trucks and other medium and heavy duty trucks. Give us a call to set up a fleet vehicle repair program for your business and we’ll help minimize downtime and maximize vehicle efficiency.

Truck Maintenance in Phoenix

Preventative maintenance is key to extending the life of any vehicle. As your source for dealer alternative truck maintenance in Phoenix, we can perform any service necessary to keep you on the road.


This includes 30/60/90K services, belt and hose repair, timing belt replacement, coolant flush, power steering flush, brake fluid flush, differential flush, transmission fluid flush, filter replacements, spark plug or glow plug replacement, truck battery replacement, truck engine tune ups and more. When you're due for scheduled truck maintenance in Phoenix, visit our local truck shop for expert service.

A white truck is driving down a road in the middle of a field

Truck Oil Change

Oil changes are critical to engine health, which is why you should never skip or delay them for any extended period. We offer full service truck oil change services for all makes and models. When completing a fast oil change we will change the oil, replace the oil filter and conduct an inspection to let you know if your rig could benefit from anything else, however we promise to never try and sell you a service not absolutely necessary for your vehicle.

A white bus is parked in a parking lot with trees in the background

S&K Transmission & Diesel Repair is a one stop shop for expert commercial truck maintenance and truck repair in Phoenix and the surrounding communities.


We thrive on helping owners and operators keep their vehicles running great, so don’t hesitate to call us at (623) 244-8887 to schedule an appointment at our full service Phoenix truck repair center.

S&K Transmission & Diesel Repair Blog

White semi-truck driving on a winding road under a clear blue sky
By S&K Transmission & Diesel Repair August 29, 2026
Whether you're hauling freight across the country or making local deliveries, your engine is subjected to long hours of operation, heavy loads, and demanding driving conditions. Major engine repairs can be extremely expensive and lead to significant downtime, making preventive maintenance essential for keeping your truck on the road. By taking a proactive approach to engine care, you can reduce the risk of serious problems. Here are four ways to help prevent major engine issues in your semi truck. Stay Current with Oil Changes Regular oil changes are one of the most important maintenance tasks for any diesel engine. Engine oil lubricates moving parts, reduces friction, and helps control operating temperatures. Over time, oil breaks down and becomes less effective, increasing wear on critical engine components. Following the manufacturer's recommended oil change intervals helps keep your engine properly protected. Monitor the Cooling System Overheating is a leading cause of serious engine damage in heavy-duty trucks. Regularly inspect coolant levels, radiator hoses, belts, and the radiator for signs of leaks or wear. Watch the engine temperature gauge during every trip and investigate any signs of overheating immediately. Routine cooling system inspections can identify worn components before they lead to expensive engine repairs. Address Warning Signs Promptly Small engine problems often become major repairs when ignored. If you notice unusual noises, excessive exhaust smoke, reduced power, fluid leaks, warning lights, rough operation, or declining fuel-economy, schedule a professional inspection as soon as possible. Early diagnosis can often resolve minor issues before they result in catastrophic engine damage. Schedule Routine Preventive Maintenance Preventive maintenance allows experienced diesel technicians to inspect your truck for developing problems before they become costly failures. During routine service, technicians can check belts, hoses, fluids, sensors, electrical systems, and other engine components while identifying worn parts that should be replaced. Regular inspections also help ensure your truck remains reliable and ready for demanding workloads. Semi Truck Maintenance in Phoenix, AZ For expert semi truck repair and maintenance in Phoenix and the surrounding area, contact S&K Transmission & Diesel Repair at  623-244-8887  . Feel free to give us a call to male an appointment!
White semi-truck driving on a winding road under a clear blue sky
By S&K Transmission & Diesel Repair August 29, 2026
Whether you're hauling freight across the country or making local deliveries, your engine is subjected to long hours of operation, heavy loads, and demanding driving conditions. Major engine repairs can be extremely expensive and lead to significant downtime, making preventive maintenance essential for keeping your truck on the road. By taking a proactive approach to engine care, you can reduce the risk of serious problems. Here are four ways to help prevent major engine issues in your semi truck. Stay Current with Oil Changes Regular oil changes are one of the most important maintenance tasks for any diesel engine. Engine oil lubricates moving parts, reduces friction, and helps control operating temperatures. Over time, oil breaks down and becomes less effective, increasing wear on critical engine components. Following the manufacturer's recommended oil change intervals helps keep your engine properly protected. Monitor the Cooling System Overheating is a leading cause of serious engine damage in heavy-duty trucks. Regularly inspect coolant levels, radiator hoses, belts, and the radiator for signs of leaks or wear. Watch the engine temperature gauge during every trip and investigate any signs of overheating immediately. Routine cooling system inspections can identify worn components before they lead to expensive engine repairs. Address Warning Signs Promptly Small engine problems often become major repairs when ignored. If you notice unusual noises, excessive exhaust smoke, reduced power, fluid leaks, warning lights, rough operation, or declining fuel-economy, schedule a professional inspection as soon as possible. Early diagnosis can often resolve minor issues before they result in catastrophic engine damage. Schedule Routine Preventive Maintenance Preventive maintenance allows experienced diesel technicians to inspect your truck for developing problems before they become costly failures. During routine service, technicians can check belts, hoses, fluids, sensors, electrical systems, and other engine components while identifying worn parts that should be replaced. Regular inspections also help ensure your truck remains reliable and ready for demanding workloads. Semi Truck Maintenance in Phoenix, AZ For expert semi truck repair and maintenance in Phoenix and the surrounding area, contact S&K Transmission & Diesel Repair at  623-244-8887  . Feel free to give us a call to male an appointment!
By S&K Transmission & Diesel Repair July 21, 2026
A semi truck's transmission is one of the hardest-working components on the vehicle, handling heavy loads and countless miles under demanding conditions. Whether you're driving long-haul routes or making frequent local deliveries, proper transmission maintenance is essential for maximizing performance and avoiding costly repairs. Fortunately, a few good maintenance habits can go a long way toward extending the life of your transmission. Here are four tips for keeping your semi truck's transmission in great shape. Follow the Recommended Maintenance Schedule Routine maintenance is one of the best ways to prevent transmission problems. Follow the service intervals recommended by the transmission manufacturer for fluid changes, filter replacements, and inspections. Clean transmission fluid provides proper lubrication and cooling while helping maintain the hydraulic pressure needed for smooth shifting. Skipping scheduled maintenance allows contaminants to build up and accelerate internal wear. Check Transmission Fluid Regularly Transmission fluid plays a critical role in lubricating gears, reducing heat, and ensuring proper operation. Regularly inspect the fluid level and condition according to your truck manufacturer's guidelines. Low fluid levels, dirty fluid, or signs of leaks should be addressed immediately. Catching a small transmission fluid leak early can prevent overheating and major internal damage. Don't Ignore Early Warning Signs Transmission problems often provide warnings before escalating. Difficulty shifting, delayed gear engagement, grinding noises, slipping gears, unusual vibrations, or warning lights should all be inspected promptly. Addressing smaller issues early often prevents much larger and more expensive repairs later. Ignoring symptoms may result in complete transmission failure and costly downtime. Reduce Heat Buildup Excessive heat is one of the leading causes of transmission failure in heavy-duty trucks. Avoid overloading your truck beyond its rated capacity and make sure the cooling system is functioning properly. Regularly inspect the transmission cooler and related components to ensure they’re operating efficiently. Keeping transmission temperatures under control helps prevent premature wear. Semi Truck Transmission Repair in Phoenix, AZ For expert truck transmission repair in Phoenix and the surrounding area, contact S&K Transmission & Diesel Repair at  623-244-8887  . Feel free to give us a call to make an appointment for big rig repair in greater Phoenix, AZ!
By S&K Transmission & Diesel Repair June 28, 2026
Your semi truck's transmission is one of the most important and expensive components in the drivetrain. It endures tremendous stress as it transfers power from the engine to the wheels while hauling heavy loads over long distances. Transmission repairs and replacements can be costly, making preventive maintenance essential for keeping your truck on the road and minimizing downtime. At S&K Transmission & Diesel Repair, we provide expert semi truck transmission service in the greater Phoenix area. Here’s a look at four tips for preventing serious transmission problems in your semi truck. Follow Recommended Transmission Service Intervals Routine maintenance is one of the best ways to protect your transmission. Following the manufacturer's recommended service schedule for fluid changes, filter replacements, and inspections helps ensure the system remains properly lubricated and free of harmful contaminants. Regular maintenance can also help identify small issues before they become major repairs. Monitor Transmission Fluid Condition Transmission fluid plays a critical role in cooling, lubricating, and protecting internal components. Low fluid levels, contaminated fluid, or fluid that has broken down due to age can increase wear and heat buildup. Regularly checking transmission fluid levels and condition can help prevent unnecessary damage. Avoid Overloading the Truck Consistently hauling loads that exceed the truck's recommended weight capacity can place excessive strain on the transmission. Overloading forces the transmission to work harder than designed, increasing heat and accelerating component wear. Staying within manufacturer weight limits can significantly reduce stress on the transmission. Address Warning Signs Immediately Unusual noises, slipping gears, fluid leaks, and warning lights should never be ignored. These symptoms often indicate developing transmission problems that can worsen quickly if left unresolved. Prompt diagnosis and repair can prevent more extensive and expensive damage. Semi Truck Transmission Service in Phoenix, AZ For expert truck transmission service in Phoenix and the surrounding area, contact S&K Transmission & Diesel Repair at  623-244-8887  . Feel free to give us a call to schedule an appointment for big rig repair in greater Phoenix, AZ!
Purple semi truck parked in a lot, side view with chrome exhaust stacks and sleeper cab
By S&K Transmission & Diesel Repair May 29, 2026
Learn about semi truck cooling system repair. Understand common issues & maintenance needs. Contact S & K Transmission & Diesel Repair today!
Close-up of a red semi-truck driving on a highway with blurred traffic in the background
By S&K Transmission & Diesel Repair April 23, 2026
Regular oil changes are vital for your commercial truck. Prevent breakdowns & improve fuel efficiency with S & K's expert services.
Red semi-truck hauling a white trailer on a пуст desert highway at sunset
By S&K Transmission & Diesel Repair March 26, 2026
Address semi truck cooling system issues to prevent engine damage & breakdowns. Trust S&K Transmission & Diesel Repair for expert service.
Close-up shot of truck tires, focusing on the shiny rims and dark tires. Black and white.
By S&K Transmission & Diesel Repair February 28, 2026
Learn about semi truck suspension repair, signs of issues, and the repair process. Contact S & K Transmission & Diesel Repair for expert service!
Gray industrial diesel engine with belts, pipes, and filters.
By S&K Transmission & Diesel Repair January 28, 2026
Get expert insights on semi truck fuel system repair, including signs of issues & maintenance tips. Contact S & K Transmission & Diesel Repair today!
Mechanic using a forklift to move a heavy engine in a repair shop. Another man observes.
By S&K Transmission & Diesel Repair December 22, 2025
Ignoring semi truck transmission issues can lead to costly repairs and safety risks. Contact us for expert repair services today!
Purple semi-truck with silver accents parked outside. A school bus and a white van are nearby under a sunny sky.
By S&K Transmission & Diesel Repair October 29, 2025
Learn the signs of semi truck suspension issues. Contact S & K Transmission & Diesel Repair for expert solutions today!