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If your truck is model year 2013 or newer with a GVWR over 14,000 pounds, you need a passing Clean Truck Check to keep operating in California. The state started enforcing this October 1, 2024. Miss your deadline and you’re looking at DMV registration holds, roadside enforcement from CHP, and fines up to $10,000 per vehicle per day.
You also need to retest every six months. That’s not optional. Your compliance deadline shows up twice a year, and if you don’t have a passing test on file, your truck gets flagged.
We handle CARB emissions testing for semi trucks, commercial fleets, and owner-operators in Montebello, CA and throughout LA County. You bring the truck, we run the OBD test, and you get documentation that keeps you compliant. No registration drama. No surprise penalties. Just a clean record with CARB and the ability to keep hauling.
We’re a CARB-credentialed testing facility serving Montebello, CA and the surrounding LA County trucking corridor. We’re licensed by the state, trained on the latest HD I/M requirements, and equipped to test OBD-equipped diesel trucks that fall under California’s Clean Truck Check program.
Montebello sits right in the middle of one of the busiest freight zones in the country. Over 100 trucking companies operate here, and nearly 60,000 people work in truck transportation across the LA region. You need testing that doesn’t waste your time or put your registration at risk.
We focus exclusively on 2013 and newer heavy-duty trucks over 14,000 pounds GVWR. That’s our lane, and we know it inside and out.
You schedule your Clean Truck Check appointment. Bring your truck to our Montebello location or ask about mobile testing if you’ve got multiple vehicles in LA County.
We connect to your truck’s OBD system and run the compliance test. This checks your emissions control systems and confirms everything is functioning the way CARB requires. If your truck is 2010-2012, we perform an opacity test using SAE J1667-compliant equipment.
Once the test is complete, you get your results immediately. If you pass, we submit the documentation directly to CARB, and it shows up in their system within a day or two. You’re good for the next six months.
If something comes back flagged, we’ll tell you exactly what needs attention before you retest. Most issues are fixable. You just need to know what you’re dealing with before your deadline hits.
You can submit a passing test up to 90 days before your compliance deadline, so if you want to get ahead of it, that’s an option. Waiting until the last minute is risky—especially if your truck needs repairs.
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Every Clean Truck Check includes a full OBD emissions compliance test performed by a CARB-credentialed tester. We’re not just plugging in a scanner—we’re trained, certified, and held to the same standards as every other credentialed facility in California.
You get official documentation that proves your truck passed. That record gets submitted to CARB and ties directly to your VIN, so when the DMV or CHP pulls up your vehicle, they see a clean compliance history.
This applies to all diesel and alternative fuel trucks over 14,000 pounds GVWR, including hybrids, commercial vehicles, government fleets, and privately owned trucks. Even if your truck is registered out of state, if it operates in California, it needs to comply.
Montebello is home to a massive concentration of freight companies and independent truckers. You’re running tight schedules, narrow margins, and constant pressure to keep moving. A registration hold or a roadside violation doesn’t just cost you money—it kills your reputation and your ability to take loads. We’re here to make sure that doesn’t happen.
Yes. If your truck is model year 2013 or newer and has a gross vehicle weight rating over 14,000 pounds, it’s required to pass a Clean Truck Check every six months. This applies to all diesel and alternative fuel heavy-duty trucks operating in California, including hybrids.
The state made this mandatory starting October 1, 2024. Any compliance deadline on or after January 1, 2025 requires a passing test. If you don’t have one on file, the DMV can block your registration, and CARB or CHP can issue citations during roadside inspections.
This isn’t a one-time thing. You’ll have a compliance deadline every six months for as long as you operate that truck in California. Mark your calendar, because missing it has real consequences.
You risk a DMV registration hold, which means you can’t renew your plates until you submit a passing test. You also open yourself up to enforcement action from CARB and the California Highway Patrol, who can issue citations during inspections or weigh station stops.
Fines can go as high as $10,000 per vehicle per day for non-compliance. That’s not a scare tactic—it’s the actual penalty structure for operating a non-compliant heavy-duty vehicle in California.
If you receive a Notice to Submit to Testing from CARB, you have 30 calendar days to get a passing test submitted. That’s a hard deadline. Don’t wait until day 29. If your truck has an issue, you need time to fix it and retest before the clock runs out.
Yes. You can submit a passing Clean Truck Check up to 90 days before your compliance deadline. If you want to get ahead of the schedule and avoid last-minute stress, that’s a smart move.
Testing early also gives you a buffer if something comes back flagged. If your truck doesn’t pass, you’ll have time to make repairs and retest without risking a registration hold or missing your deadline.
A lot of fleet operators in Montebello use this window to stagger their testing schedules, especially if they’re managing multiple trucks. It keeps everything organized and reduces the chance of downtime during peak hauling season.
You still need to comply. The Clean Truck Check requirement applies to any heavy-duty truck over 14,000 pounds GVWR that operates in California, regardless of where it’s registered. If you’re hauling freight through the state, you’re subject to the same emissions testing rules as California-plated trucks.
CARB and CHP don’t care what your license plate says. They care whether your truck meets California’s emissions standards. If you get pulled over or flagged during an inspection and you don’t have proof of compliance, you’re getting cited.
Out-of-state operators get caught off guard by this all the time. If you run routes through California regularly, get your Clean Truck Check done and keep your documentation current. It’s a lot cheaper than dealing with fines and delays on the side of the highway.
Most tests take 30 to 45 minutes, depending on the truck and whether we’re running an OBD test or an opacity test. You’re not sitting around all day.
For 2013 and newer trucks, we connect to the OBD system and run the compliance check. It’s straightforward. For 2010-2012 model year trucks, we perform a visual inspection and an opacity test using certified equipment.
Once the test is done, you get your results right away. If you pass, we submit everything to CARB, and it shows up in their system within a day or two. If there’s an issue, we’ll walk you through what needs to be addressed before you retest. No runaround, no vague answers—just clear information so you know what to do next.
If your truck is model year 2013 or newer with a GVWR over 14,000 pounds and it operates in California, you need a Clean Truck Check—even if you only drive it a few times a year. The requirement isn’t based on mileage or frequency. It’s based on the vehicle classification and where it operates.
This includes commercial trucks, privately owned motorhomes over 14,000 pounds, government vehicles, and anything else that falls into the heavy-duty category. If it’s registered or operated in California and meets the weight and model year criteria, it’s subject to biannual testing.
A lot of owner-operators and small fleet managers assume they’re exempt because they’re not running full-time routes. That’s not how CARB sees it. If your truck is on the road in California, even occasionally, you need to stay compliant or risk registration issues and fines.
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