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If you’re running a 2013 or newer semi truck with a GVWR over 14,000 pounds in California, you already know the stakes. Miss your Clean Truck Check deadline and the DMV puts a hold on your registration. That means your truck sits. Your income stops. And the penalties start stacking—up to $10,000 per vehicle, per day.
You don’t have time to figure out CARB’s regulations on your own. You need a credentialed tester who knows the process, has the right equipment, and can get your truck compliant fast. That’s what we do.
We test 2013 and newer heavy-duty diesel and alternative fuel trucks that qualify under California’s Clean Truck Check program. Our testers are CARB certified, our results upload directly to the CTC-VIS database, and you get proof of compliance the same day. No surprises. No runaround. Just a passing test and a truck that’s cleared to operate.
All SMOG Motors focuses exclusively on CARB compliant testing for qualifying heavy-duty vehicles in Good Hope and across Riverside County. We’re not a general smog shop trying to do everything. We specialize in Clean Truck Check compliance for 2013 and newer trucks over 14,000 pounds GVWR—the exact vehicles California is regulating under the new emissions rules.
Good Hope sits in a major freight corridor. Trucks move through here constantly, and most of them need to stay CARB compliant to keep operating in California. We built our service around that reality. Our testers are trained, credentialed, and equipped to handle OBD-based emissions testing the way CARB requires it.
You’re not getting a sales pitch. You’re getting a test, a result, and documentation that satisfies the state.
First, we confirm your truck qualifies. That means it’s model year 2013 or newer and has a gross vehicle weight rating over 14,000 pounds. If it doesn’t meet both of those criteria, this test doesn’t apply to your vehicle.
Once confirmed, we connect to your truck’s OBD system using CARB-approved diagnostic equipment. The test pulls data directly from your engine’s onboard computer—emissions levels, system readiness, fault codes. It takes about 20 to 30 minutes if your truck is ready. If your OBD monitors aren’t set—meaning the truck hasn’t been driven enough since the last code clear—you’ll get a “Not Ready” result. That’s not a failure, but it does mean you’ll need to drive the truck for a few days and come back.
If your truck passes, we upload the results to the CTC-VIS database immediately. CARB and the DMV see it right away. You get a certificate, and your compliance deadline is satisfied. If your truck doesn’t pass, we’ll tell you what’s flagged and what needs fixing before you can retest.
You can test up to 90 days before your deadline, which gives you time to handle repairs if needed. Waiting until the last minute just adds risk.
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You get a CARB-certified emissions test performed by a credentialed tester using state-approved equipment. The test checks your truck’s OBD system for compliance with California’s diesel emissions standards under the Clean Truck Check program.
If your truck passes, your results are uploaded to the CTC-VIS database the same day. That clears your compliance deadline and prevents any DMV registration hold. You’ll receive documentation proving your truck is legal to operate in California.
This service is specific to trucks that are 2013 or newer with a GVWR over 14,000 pounds. Older trucks and lighter vehicles don’t qualify under this program. If you’re not sure whether your truck fits, we’ll verify that before we start.
Good Hope is home to a large number of commercial drivers and small fleet operators. Most of them are dealing with the same compliance deadlines. The difference between staying on schedule and losing days of work often comes down to how fast you can get tested and get back on the road. We keep the process straightforward so you’re not sitting around waiting.
Your truck needs this test if it meets two conditions: it’s model year 2013 or newer, and it has a gross vehicle weight rating over 14,000 pounds. That includes most semi trucks, heavy-duty diesel trucks, and some larger alternative fuel vehicles operating in California.
It doesn’t matter if your truck is registered in California or out of state. If you’re operating in California and your truck fits those criteria, CARB requires periodic emissions testing. The first compliance deadline started in 2024, and testing frequency depends on your truck’s specific compliance schedule in the CTC-VIS system.
If your truck is older than 2013 or weighs less than 14,000 pounds GVWR, this particular test doesn’t apply. But if you’re running a newer heavy-duty truck and you haven’t registered it in the CTC-VIS database or completed a test, you’re likely overdue.
The actual test takes 20 to 30 minutes once we connect to your truck’s OBD system. But that assumes your truck is ready to test. If your OBD monitors aren’t set—meaning the system hasn’t completed its internal checks—you’ll get a “Not Ready” result and you’ll need to drive the truck for a few days before coming back.
A “Not Ready” result isn’t a failure. It just means your truck’s computer hasn’t gathered enough data since the last time a code was cleared or the battery was disconnected. You’ll need to operate the truck through normal driving cycles to reset those monitors.
If your truck passes, we upload the results immediately and you’re done. If it doesn’t pass, you’ll need to address whatever fault codes or emissions issues are flagged, then retest. Repairs can take anywhere from a few hours to a few days depending on what’s wrong. That’s why testing early—up to 90 days before your deadline—makes sense.
If your truck fails, the test results will show which emissions systems or fault codes are out of compliance. You’ll need to get those issues repaired before you can pass a retest. We’ll tell you exactly what’s flagged, but we don’t perform the repairs—you’ll need to take your truck to a qualified diesel mechanic.
Once the repairs are done, you come back for another test. There’s no limit on how many times you can retest, but every day you’re out of compliance after your deadline puts you at risk for penalties and registration holds.
Some operators wait until the last minute and then find out their truck needs work. That’s when things get expensive. If your deadline passes and your truck still isn’t compliant, the DMV can freeze your registration and CARB can issue fines up to $10,000 per day. Testing early gives you a buffer to handle repairs without losing your ability to operate.
Yes. We offer mobile testing for fleets and operators who need on-site service in Good Hope and surrounding areas in Riverside County. If you’re managing multiple trucks or you can’t afford to take vehicles out of service to bring them in, mobile testing keeps your operation moving.
We bring the same CARB-approved OBD diagnostic equipment to your location. The test works the same way, the results upload to the CTC-VIS database the same day, and you get the same certification. The only difference is we come to you.
Mobile testing works best when you’re scheduling multiple trucks at once or when your operation is based in a location that makes it easier for us to come to you than for you to come to us. If you’re running a small fleet in Good Hope and you’ve got several trucks hitting compliance deadlines around the same time, mobile testing can save you a full day of downtime.
You can test up to 90 days before your compliance deadline. That’s the window CARB allows for early testing, and it’s there specifically so you have time to handle repairs if your truck doesn’t pass.
If you test early and your truck passes, the result gets uploaded and your deadline is satisfied. You’re good until your next compliance period. If your truck fails, you’ve got three months to fix the problem and retest before penalties kick in.
Most operators who run into trouble are the ones who wait until the week of their deadline. If something’s wrong with the truck, there’s no time to get parts, schedule repairs, or retest. Then the deadline passes, the DMV puts a hold on the registration, and the truck can’t legally operate. Testing early removes that risk. You know where you stand, and you’ve got time to act if needed.
A regular smog check applies to passenger vehicles and light-duty trucks under 14,000 pounds. It’s the test you’re used to seeing at standard smog stations. Clean Truck Check is a separate program that applies specifically to heavy-duty trucks—2013 and newer, over 14,000 pounds GVWR—and it requires a CARB credentialed tester using OBD-based emissions diagnostics.
The equipment is different. The database is different. The compliance deadlines are different. And not every smog shop is set up to perform Clean Truck Check testing. You need a tester who’s completed CARB’s training, passed the exam, and has access to the CTC-VIS system.
If you walk into a general smog shop with a 2018 semi truck and ask for a smog test, there’s a good chance they’ll either turn you away or they’ll run the wrong test. Clean Truck Check is its own program with its own rules, and it only applies to qualifying heavy-duty vehicles. That’s what we’re set up to handle in Good Hope.
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