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If you’re running 2013 or newer diesel trucks over 14,000 pounds GVWR in California, you already know CARB diesel compliance isn’t optional. You need testing twice a year, and if you miss it, your registration gets held. That’s not a maybe—it’s how the system works.
What you might not know is that you can get your Clean Truck Check done at your location. No driving to a shop. No waiting around. We bring CARB-certified equipment to your yard or job site in East San Gabriel, run the OBD test, and submit results directly to CARB the same day.
You stay compliant. Your trucks stay on the road. And you don’t lose hours you can’t afford to give up. That’s the difference between scrambling every six months and having a system that actually works with your operation.
We’re a state-licensed, CARB credentialed Clean Truck Check provider serving East San Gabriel and the surrounding Los Angeles County area. That credential isn’t just a title—it means we’ve completed CARB’s training course, passed the exam, and use only CARB-certified OBD test devices.
East San Gabriel has a strong base of independent truckers and small fleet operators, many running just one or two trucks. You’re not corporate. You don’t have a compliance department. You need someone who gets it done right the first time without the runaround. That’s what we do—testing that meets California CARB compliance standards, submitted properly, so you’re covered when the deadline hits.
You call or message us with your truck details—year, make, VIN, and GVWR. We confirm it qualifies (2013 or newer, over 14,000 pounds), then schedule a time that works for you. Testing can be done up to 90 days before your compliance deadline, so there’s no reason to wait until the last minute.
We come to your location in East San Gabriel with our CARB-certified OBD scanner. The test itself takes minutes—we plug into your truck’s diagnostic port, pull the emissions data, and check for any fault codes or readiness issues. If your truck passes, we submit the results to CARB’s system that same day.
You’ll get confirmation that your compliance is recorded. No paperwork to mail. No follow-up appointments. Just proof that your truck is legal to operate and your registration won’t get flagged. If there’s an issue, we’ll tell you what it is and what needs to happen next—no surprises, no guessing.
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California’s Heavy-Duty Inspection and Maintenance program—also called CARB HD I/M testing—requires semi-annual emissions testing for diesel trucks. That means twice a year, every year, for as long as you operate in California. The program started in October 2024, and compliance deadlines began January 1, 2025. If you’re registered in California or you operate here regularly, this applies to you.
The testing itself is OBD-based for 2013 and newer trucks. We’re checking your onboard diagnostics for emissions performance, not doing a visual inspection or putting your truck on a dyno. It’s faster than older smog test methods, but it has to be done by a CARB credentialed tester using approved equipment. You can’t do it yourself, and a regular smog shop can’t do it unless they’re certified for heavy-duty vehicles.
East San Gabriel sits in an area with heavy freight traffic and a lot of small trucking operations. That means there’s a lot of trucks that need testing, and not a lot of margin for error. Miss your deadline and your DMV registration gets held. Keep missing it and you’re looking at fines that stack up. CARB also uses roadside monitoring to flag high emitters, and if your truck gets flagged, you have 30 days to test. Mobile service makes that a lot easier to manage.
Your truck qualifies if it’s model year 2013 or newer, has a gross vehicle weight rating over 14,000 pounds, and runs on diesel. This applies whether your truck is registered in California or out of state—if you operate on California roads, you need to comply.
Trucks older than 2013 or under 14,000 pounds GVWR don’t fall under this program. If you’re not sure about your truck’s GVWR, check the label on the driver’s side door jamb or your registration. We can also confirm eligibility when you reach out with your VIN.
This isn’t a smog check for light-duty vehicles. It’s a separate CARB truck regulation specifically for heavy-duty diesel emissions, and it requires specialized equipment and certification to perform.
Right now, you need Clean Truck Check testing twice a year—every six months. Your specific deadlines are based on your truck’s VIN and are tracked through CARB’s CTC-VIS system. You can test up to 90 days before your deadline, which gives you a window to plan around your schedule.
Starting in October 2027, the requirement increases to four times a year for OBD-equipped vehicles. That’s every three months. CARB is phasing this in, so for now, semi-annual is the rule, but it’s worth knowing what’s coming if you’re planning long-term.
If you miss a deadline, your registration renewal gets blocked by the DMV. You won’t be able to renew until you’re compliant, and every day you operate out of compliance adds risk of fines or your truck being taken out of service during a roadside inspection.
No. Clean Truck Check testing has to be done by a CARB credentialed tester using CARB-certified equipment. Most smog shops are set up for light-duty vehicles and don’t have the certification or the tools to test heavy-duty diesel trucks under this program.
A CARB credentialed tester has completed specific training on CARB truck regulations, passed an exam, and is authorized to submit test data directly to CARB’s system. That credential is valid for two years and has to be renewed. If someone isn’t credentialed, they can’t legally perform the test, and the results won’t count toward your compliance.
We’re a state-licensed CARB certified smog check provider for heavy-duty vehicles in East San Gabriel. That means we meet the requirements, use the right equipment, and submit results the right way so your compliance is recorded without issues.
If your truck fails, it means the OBD system detected an emissions-related fault code or a readiness monitor issue. We’ll tell you exactly what the problem is based on the diagnostic data. From there, you’ll need to get the issue repaired and then retest.
Common reasons for failure include check engine lights, faulty sensors, or incomplete readiness monitors—which can happen if the battery was recently disconnected or the truck hasn’t been driven enough after a repair. Some of these are quick fixes. Others might need a mechanic.
Once the repair is done, you can schedule a retest. The goal is to get you compliant as quickly as possible so your registration doesn’t get held and you’re not sitting on a truck you can’t legally operate. We’ll walk you through what needs to happen and answer any questions about the next steps.
Yes. We bring the test to your location—whether that’s your yard, a job site, or your business. You don’t need to drive your truck anywhere or wait at a shop. We show up with our CARB-certified OBD scanner, run the test on-site, and submit the results the same day.
Mobile service is a big advantage for owner-operators and small fleets in East San Gabriel. You’re not losing half a day to compliance. You’re not coordinating drivers or pulling trucks off jobs. We work around your schedule and come to you.
Same-day appointments are available depending on demand, and we offer fleet pricing if you’re testing multiple trucks. The process is fast, the results are submitted directly to CARB, and you get confirmation that your compliance is on record. That’s it—no extra steps, no waiting for paperwork.
Pricing depends on whether you’re testing a single truck or multiple vehicles. We offer fleet discounts for operators running more than one truck, which can add up when you’re testing twice a year. Mobile service is included—you’re not paying extra for us to come to your location.
The cost of the test is a small fraction of what you’d pay in fines, registration penalties, or lost work if your truck gets flagged or taken out of service. CARB enforcement is real, and the penalties grow the longer you’re out of compliance.
If you want an exact quote, reach out with your truck details and how many vehicles you need tested. We’ll give you a straight answer with no surprises. The goal is to keep your operation moving without the stress of chasing compliance deadlines or dealing with DMV holds.
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