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When you're clocking serious miles behind the wheel of a Class 8 truck, breakdowns aren't a matter of "if", they’re a matter of "when." These 33,000+ lb machines haul everything from heavy machinery to fresh produce. But their size and stamina come with a price: wear and tear that can put you on the side of I-15 faster than you can say "check engine light."
That’s why we’ve asked our team what the most common repairs for Class 8 trucks are.
Brake issues are among the most frequent repairs we see for heavy-duty trucks. With the sheer weight they carry, especially on Nevada's steep grades, brakes take a serious beating.
Unlike light vehicles that use hydraulic brakes, Class 8 trucks rely on compressed air brake systems—a complex setup involving air compressors, slack adjusters, service chambers, and more.
Symptoms like poor stopping power, squealing, or pulling to one side shouldn’t be ignored. At 80,000 pounds, delayed braking can be deadly.
Diesel engines are rugged but far from invincible. Whether it’s Cummins, Detroit, or PACCAR, problems often stem from fuel system issues, EGR valve failures, or oil pressure drops.
White smoke, power loss, or burning oil are red flags. North Las Vegas heat is brutal on engines, and overheating can escalate quickly.
Transmission problems are no joke, especially when hauling up mountainous Nevada terrain. Whether manual, automated manual, or automatic, issues like gear slipping or overheating are inevitable.
Sluggish acceleration or gears refusing to engage are signs to visit the shop before a minor issue becomes a full rebuild.
Nevada highways aren’t always kind. Years of bouncing over potholes and rail crossings wreak havoc on suspension systems.
Bouncy rides, leaning, or steering play are early warning signs of bigger problems.
Emissions systems keep the air clean but are notorious for causing downtime.
Warning lights, poor fuel economy, or limp mode are common symptoms—especially in extreme heat.
Overheating is a Class 8 trucker’s nightmare. The cooling system works overtime under the Mojave sun.
If your temperature gauge climbs, pull over. Overheating can cause catastrophic engine damage.
Modern Class 8 trucks rely heavily on electronics. Electrical failures can halt your route instantly.
Slow starts, dead batteries, or multiple warning lights are signs of electrical trouble.
Wheel bearings keep your wheels spinning smoothly. When they fail, heat builds fast—sometimes enough to seize the wheel assembly.
Left untreated, a failed bearing can weld itself to the spindle, requiring full hub replacement.
Class 8 trucks are workhorses, but even the toughest rigs need care. Brake systems, engines, transmissions, cooling components, and emissions equipment make up the majority of repairs.
Whether you're running freight across I-15 or navigating stop-and-go routes near Las Vegas, staying ahead of these issues keeps your wheels rolling and your load on time.
Need help staying ahead of the curve? Don’t wait until you're sidelined. Schedule your next inspection or maintenance check today!
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Have questions or want to schedule your vehicle in for a repair or service? Get in touch, we're open Monday through Friday from 8:00AM to 5:00PM, and Saturday from 8:00AM to 3:00PM
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