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Semi Truck Smog Check

Making sure your truck passes the semi truck smog check is now a key part of keeping your rig legal and running. California’s HD I/M program requires all heavy-duty diesel vehicles to undergo regular diesel emissions testing. This isn’t just a routine check it’s a necessary step to avoid violations, fees, or being placed out of service. Our service helps you meet all truck emissions compliance standards with ease. Whether you’re new to the rules or just need help staying current, we guide you through everything from testing to certification.

We provide mobile, on-site truck smog check services that save you time and stress. No more waiting at a crowded smog check station we bring everything to your location. Our certified testers are trained in heavy-duty truck inspection, and we know what it takes to help your vehicle pass the clean truck check the first time. We issue valid CTC certificates and offer full support for clean truck check registration. You can trust us to make sure your truck is ready, clean, and compliant under the latest HD I/M and CTC rules. We also provide truck stop dmv and clean carb services.

semi truck smog check
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Reliable Truck Inspection at Your Location and Clean Truck Check Tester

Getting your truck emissions inspection done should be simple and fast. That’s why we offer on-site truck emissions testing—we come to you. Whether you’re managing a fleet or driving solo, our mobile team provides certified clean truck check services that are built around your schedule. We’re fully trained to handle all parts of the HD I/M program, including diesel truck inspections, CTC compliance, and even help with paperwork like CTC registration.

Our inspections are detailed and accurate. We use the latest equipment to complete your diesel emissions test, verify your truck’s systems, and issue a clean truck check certificate when your vehicle passes. If there’s a problem, we let you know exactly what to fix before a retest. We don’t just check boxes—we help you truly understand your truck’s condition. With our CTC credentialed testers, you can trust you’re getting expert help that keeps your truck running clean and legal. We also provide services in Murrieta and Norco .

Professional Truck Status and Clean Air Testing

Our clean air testing is about more than just passing a test—it’s about knowing your vehicle is running right. A well-maintained truck not only meets HD I/M test standards but also runs better, uses less fuel, and avoids costly downtime. We check your engine codes, emission systems, and general performance to make sure you’re ready for the road. From your first HD I/M test to ongoing CTC compliance, we’re with you every step of the way.

Need help figuring out how to get a clean truck check? We make it easy. We break down the process, help you with clean truck check registration, and walk you through everything from inspections to your CTC certificate. Our job is to make truck checking simple. We follow every rule of the HD I/M program, and we stay up to date with changing clean truck check requirements so you don’t have to. Let us take care of your truck emissions test, while you focus on your business. We also provide smog check for heavy trucks and diesel truck inspection service.

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Trusted By The World's Finest

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Why Choose Us?

Licensed, Certified, and Fully Credentialed

We are fully licensed and certified to perform all HD I/M inspections, diesel emissions tests, and clean truck checks. Our team includes trained and credentialed testers who meet all the requirements under the California Air Resources Board (CARB) and CTC program. We don’t just follow the standards—we exceed them. Our clean truck check certificates are 100% valid, recognized, and accepted across California. When you choose us, you’re choosing compliance, accuracy, and legal peace of mind.

We know your time is valuable. That’s why we bring our smog check and clean air testing services directly to your location. Whether your trucks are parked at a job site, in your yard, or at a truck stop, we arrive equipped and ready. You don’t have to waste time traveling to a smog check station. Our on-site service is fast, reliable, and fully mobile—designed to keep your trucks rolling and your business on schedule.

We make testing simple and stress-free. Our process is streamlined from start to finish. We help with paperwork, explain every step, and deliver results on-site. You get clear answers, fast inspections, and helpful service every time. We know how to avoid the delays and red tape that slow down other providers. With us, the process is always clear, quick, and easy to understand.

We stay up to date on every rule and requirement from the HD I/M program and Clean Truck Check system. From CTC registration to understanding exemptions and certificates, we guide you through it all. We explain what’s needed, when it’s needed, and why it matters—so you never fall behind or get caught by surprise. Our knowledge helps you stay in full compliance, year after year.

Whether you’re an independent trucker or managing a large fleet, we offer full support tailored to your needs. For fleets, we organize testing schedules, manage multiple vehicles, and keep your records up to date. For owner-operators, we handle every detail one-on-one and help you stay current with testing deadlines and requirements. We’re here to help every truck stay clean and road-ready.

We don’t just test—we also help with clean truck check registration, understanding CTC requirements, and even how to handle penalties or exemptions. Our team can walk you through getting your CTC certificate and staying on top of testing schedules. If you’ve ever felt confused about the rules, we’ll make it simple. We are your one-stop shop for all CTC compliance support.

We check everything properly—engine codes, emission controls, and all system requirements. If something’s wrong, we tell you clearly and help you fix it. We don’t skip steps or rush. Our goal is not just to pass a test but to help your truck operate cleaner and stronger. We take our time to do the job right and keep you safe and compliant.

Happy Clients

"Fast, professional, and super friendly team!" Clean Truck Check gave my semi a full inspection and detailed clean in record time. I was back on the road confident and spotless. Highly recommend!
– Mike Johnson
– Mike Johnson
Clean Truck Check is a lifesaver!" They spotted an issue during the safety check that could’ve caused major trouble later. Their crew knows their stuff and the wash made my truck look brand new.
– Laura Martinez
– Laura Martinez
"Excellent service every time." I trust Clean Truck Check to handle multiple trucks with care and consistency. Their combo of inspections and cleanings saves us time and money.
– Kevin Brooks
– Kevin Brooks
"Best truck wash and check-up in town!" Great prices, fast service, and honest feedback. They even cleaned the interior better than some detail shops I’ve tried. Clean Truck Check is my go-to spot now.
– Sarah Thompson
– Sarah Thompson
"Friendly staff and spotless results!" I brought in my work truck for a DOT pre-inspection and wash. Passed the real check with flying colors. Clean Truck Check really delivers what they promise.
– Jamal Wright
– Jamal Wright
"Top-notch service with zero hassle!" I stopped in for a quick inspection, but the crew at Clean Truck Check went above and beyond. They cleaned my truck inside and out and even gave me tips to pass my DOT check easily.
– Brian Ellis
– Brian Ellis
"Reliable, honest, and super clean results!" We send all our company trucks here for monthly inspections and cleaning. The team is always on time, respectful, and does a solid job every single visit.
– Jasmine Patel
– Jasmine Patel
"This place is a hidden gem!" Clean Truck Check gave my rig the best wash it’s had in months. The inspection caught a brake issue I didn’t even know about. These folks really know their trucks.
– Chris Dugan,
– Chris Dugan,
"Great customer service and spotless work!" Our fleet stays clean and compliant thanks to Clean Truck Check. They’re fast, affordable, and always communicate clearly. They’ve made my job easier!
– Angela Reed
– Angela Reed
"They treat every truck like it’s their own!" Whether it’s a quick wash or a full inspection, Clean Truck Check never cuts corners. You can tell they care about safety and keeping your ride in top shape.
– Marcus Hill
– Marcus Hill

FAQs

What is a semi truck smog check, and why do I need it?

A semi truck smog check is a required emissions test for heavy-duty diesel trucks under California’s HD I/M program. It helps ensure your truck meets state air quality rules and avoids penalties or downtime.

Yes. We offer fully mobile truck inspections. Our team comes to your location—whether it’s a yard, job site, or truck stop—to complete diesel emissions testing and issue certificates on-site.

  1. The clean truck check certificate shows that your vehicle passed all CTC requirements under the HD I/M program. It proves your truck is in compliance with current emissions laws.

We help you through the entire clean truck check registration process, including setting up your CTC account, understanding what paperwork you need, and getting ready for testing.

If your truck fails, we’ll let you know exactly why. Our team explains the issues clearly and helps you understand what needs to be fixed before a retest. We’re here to support you through the process.

  1. Testing schedules depend on your truck’s age, engine type, and the state’s program updates. We track your deadlines and can help you stay on schedule with regular reminders and planning.
  1. Yes, we serve both. We help large fleets manage multiple inspections efficiently and also work one-on-one with individual truck owners to meet their clean truck check and HD I/M needs.