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Drive Shafts: What Are They, Why They Fail, & Go-To Fixes (Trucks)

A fleet of Peterbilt trucks lined up in a row

The power behind your truck doesn’t only come from your engine. It also comes from your drivetrain components like your drive shaft. A drive shaft helps transmit torque from your vehicle’s engine to the wheels to, well, get you going. But what is a drive shaft? And why should you know about it as a […]

Comparing ASE-Certified Master Technicians Vs. Traditional Mechanics

A mechanic and customer smiling and shaking hands in the foreground with a fleet vehicle in the background

Truck technicians versus ASE-certified master technicians: What’s the difference? You might wonder. An entry-level diesel repair mechanic is versed in diagnostic techniques, general repairs, and select body work, while a master technician has advanced knowledge and certification expertise beyond that of a general truck technician. But when it comes to training, ASE certification is the […]

Why Are My Headlights Flickering? 7 Common Reasons

A line-up of fleet trucks parked along the side of a road

Trucks, cars, and motorcycles: they all experience the same issue. Dimming lights turning on and off. You might be asking yourself, “Why are my headlights flickering?” You’re not wrong to wonder, because driving late at night without your trusty lights to guide the way can be a real safety hazard for you and other nearby […]

Can Bad Spark Plugs Cause Overheating? Causes, Signs, & Prevention

Hands on a truck wheel

Tiny little explosions: That’s what spark plugs create inside the engine of a vehicle. Bet you didn’t know that spark plugs’ purpose is to ignite the air-fuel mixture that creates small explosions that set off a truck’s pistons to start moving. Those pistons generate the power for your vehicle. So, if you’ve noticed your engine […]

10 Transmission Faults (and Problems) that Warrant Truck Repairs

A mechanic looking at the belly of a vehicle for transmission faults and other repairs

Slipping gears? Notice leaking fluid from your truck’s transmission? How about the “Check Engine” light and the power from your vehicle: Are you noticing the lights turn on, but your engine seems to be turning off, power-wise? These tell-tale signs and symptoms could indicate a transmission fault under your hood. Certified Fleet Services here. For […]

5 Signs and Symptoms of Overfilled Transmission Fluid on Trucks

Certified Fleet Services mobile repair fleet vehicle

Truck drivers and fleet managers: A surplus of something is usually a good thing. drivers, more trucks, more work: More is usually a good thing. Not so with transmission fluid. In fact, one of the signs of overfilled transmission fluid, a major sign and result, is transmission failure. If you’re thinking about topping up transmission […]

The Complete Fleet Vehicle Maintenance Checklist for Safety (Trucks)

A fleet of Peterbilt trucks lined up in a row

Fleet managers: you know better than anyone else that managing a fleet of vehicles is about keeping it safe, cost-effective, and operable. Nevertheless, if you or your team lapse on completing your daily, weekly, or even monthly fleet vehicle maintenance checklist, you’re more likely to experience unplanned downtime, faulty components, and bottlenecks or delays. Nevertheless, […]

Transmission Overheating or Too Hot? Here’s What to Do

A person sitting in the driver's seat in a semi truck reviewing what appears to be a stack of papers on the driver's wheel

Engine overheating? It happens from time to time. Transmission overheating? Believe it or not, it can happen. When a diesel truck’s transmission temperature is too hot, you might notice the presence of strong burning odors, difficulty shifting gears, or potential transmission failure. The best way to recognize an overheating transmission is to familiarize yourself with […]

How to Bleed Air Out of Your Diesel Engine & Fuel System (Trucks)

A mechanic working on the inside of a semi-truck hood

Air coming into a diesel engine can cause serious problems. Diesel being prevented from reaching the fuel injectors is one such problem. “Bleeding” a diesel engine of its air is crucial to helping it start and stay powered up. But before you attempt to bleed air from the fuel system, you need to figure out how […]

Your Truck’s Drivetrain Components Explained (A Short Guide)

A person opening the hood of a truck

Think you’ve got an issue with your drivetrain? It’s a critical system that acts as a liaison between your engine and wheels. If something isn’t working with your drive train components, you could experience more wear and tear, or even engine failure. Whether you’re just trying to change your truck’s transmission fluid or want a […]