NorthState Mobile Smoke Testing

05/28/2026

A lot of owners are confused about when their trucks need to be tested under California’s Clean Truck Check program, especially for:

• Out-of-state registered trucks

• IRP/apportioned trucks

• DMV-exempt plated vehicles

• Government or specialty plated vehicles

Here’s the important part 👇

✅ If your vehicle is NOT tied to a California DMV registration expiration date, your testing months are based on the LAST DIGIT OF THE VIN.

VIN LAST DIGIT → TEST MONTHS

• 0 = October & April

• 1 = January & July

• 2 = February & August

• 3 = March & September

• 4 = April & October

• 5 = May & November

• 6 = June & December

• 7 = January & July

• 8 = February & August

• 9 = March & September

⚠️ Most trucks are required to test TWICE per year.
⚠️ RVs/Motorhomes are generally ONCE per year based on their assigned month.
⚠️ Testing can usually be completed up to 90 days early without changing your assigned months.

Many owners don’t realize:
❌ Paying registration monthly or quarterly does NOT change your Clean Truck Check due months.
❌ Out-of-state vehicles are still required to comply if operating in California.
❌ Missing even one testing period can lead to compliance issues and possible DMV or enforcement problems.

We help with:
✔ OBD Testing (2013+ engine years)
✔ CTC Account Setup
✔ DMV Hold Assistance
✔ Mobile On-Site Testing
✔️Connected Devices
✔️GPS/Telematics/Dash Cams

📍 Mobile Service Throughout Northern California
📞 916-345-4947

NorthStateMobile.com

05/21/2026

Locked out of CTC-VIS?
Watch our new step-by-step video to reset your password and regain access to your account.
bit.ly/4q8xYlW

04/07/2026

🚨 CLEAN TRUCK CHECK REFEREE – WHAT YOU NEED TO KNOW

A lot of people are asking about being “Referred to Referee” under the Clean Truck Check program, so here’s a clear breakdown 👇

🧾 WHAT IS THE REFEREE PROGRAM?

The Clean Truck Check Referee Program is an independent inspection process for heavy-duty vehicles (over 14,000 GVWR) when something cannot be resolved through a normal test.

These inspections are handled through CARB’s referee system and are typically required when there are compliance issues, test problems, or enforcement actions.

⚠️ WHEN DO YOU GET SENT TO A REFEREE?

You may be required to schedule a referee appointment if:

• State-directed testing (CARB or law enforcement request)

• Notice to Submit to Testing (NST)

• Submitted incorrect or questionable OBD test data

• Refusal to test or incomplete testing

• Suspected emissions tampering or system issues

• Open CARB enforcement action or citations

• CHP-related violations

• Failure to submit required testing data

🔍 OTHER COMMON REASONS

• VIN / engine mismatch

• Engine change or swap verification

• Alternative fuel system retrofit verification

• Motorhome (RV) conversion verification

• Inspection incompatibility (vehicle won’t test normally)

• No credentialed tester available

• Audit or compliance verification

• Disputing a test result

SPECIAL CASES

You may also go to referee for:

• Parts unavailable (compliance extension requests)

• CARB requesting proof of repairs or compliance

• Vehicles flagged through enforcement systems

🗓️ HOW TO REQUEST A REFEREE APPOINTMENT

1. Log into your CTC-VIS account

2. Go to Forms

3. Select “Referee Appointment Request”

4. Follow instructions to schedule

⏱️ DMV HOLD INFO

• Once you pass → CARB updates DMV automatically

• Allow 3–5 business days for DMV hold to clear

• You still need to contact DMV to complete registration

📬 NEED HELP?

• Clean Truck Check questions: [email protected]

• Citation questions: [email protected]

💥 REAL TALK

A referee situation usually means something was missed, rushed, or not verified before testing.

That’s why it’s important to work with someone who understands:
✔ Readiness
✔ Data validation
✔ Proper test procedures
✔ CARB system requirements

🚛 WE CAN HELP

At North State Mobile Solutions, we help:

• RV owners

• Owner operators

• Fleets

04/03/2026

12/03/2025

Looking for 1099 sales people wherever you live whatever your jam phone calls door-to-door give me a call 916-628-9061 

11/16/2025

We have connected devices in stock! GPS Tracking platform access included with service. Call today! 916-345-4847

Set it and forget it! With continuously connected telematics OBD devices, no credentialed tester required.

Find the latest list of CARB-certified devices here: https://bit.ly/3KLGG9D

03/08/2025

Now offering connected devices! Skip the hassle and downtime w in person testing! Expandable to incorporate ELD/HOS, GPS, Dash Cams, and more!
Call for details. The next 20 customers receive unheard of pricing!
Call now! 916-345-4847

03/04/2025

Curious about and how emissions compliance testing works?

Check out CARB’s resource page for everything you need to keep your fleet compliant and moving: https://bit.ly/40Fw15T

02/28/2025

Did you miss your compliance due date? Don’t wait – take action today.

Log in to your CTC-VIS account, complete your compliance requirements, and head to the DMV to get that hold released. Don’t wait – take action today: https://bit.ly/4gq5SNS

02/18/2025

Anybody have to upgrade their ELD Solution?? Talk to us first!!

Welcome to the ELD Home Page Electronic logging devices (ELDs) are intended to create a safer work environment for drivers of commercial motor vehicles, and make it easier and faster to accurately track, manage, and share data on driving and off-duty time. FMCSA removes six ELDs from the Registered....