---
title: "Valley Diesel Compliance — Clean Truck Check, Clovis, CA"
description: "Valley Diesel Compliance in Clovis, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD) testing…"
url: "https://ctcfinder.com/tester/valley-diesel-compliance-clovis/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Valley Diesel Compliance

Clean Truck Check tester in Clovis, CA (Fresno County).

> CTC Finder is an independent directory, not affiliated with CARB. Tester data: CARB Clean Truck Check public tester list, last checked November 1, 2026. Confirm services, hours and prices with the tester.

| Field | Value |
|---|---|
| Location | 2160 Hermosa Ave, Clovis, CA 93619 |
| County | Fresno County |
| Phone | (559) 373-0019 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Valley Diesel Compliance can test

| Your vehicle | Test required | This tester |
|---|---|---|
| Diesel, model year 2013 or newer | OBD scan | Yes |
| Alternative fuel (natural gas, propane), 2018 or newer | OBD scan | Yes |
| Diesel, model year 2012 or older (no OBD) | Smoke opacity test (SAE J1667) plus visual inspection | Yes |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |

## Clean Truck Check testers in Fresno County

Valley Diesel Compliance is one of 123 testing businesses in Fresno County on CARB's public tester list. 102 of them offer mobile testing and 47 do smoke opacity tests. In Clovis itself there are 9 listed businesses, 9 of them mobile.

## When your truck is due

Most trucks test twice a year, on a schedule tied to the DMV registration expiration date. CARB says OBD trucks move to four tests a year beginning October 2027. California-registered (non-commercial) motorhomes and agricultural vehicles test once a year. See the [deadline guide](https://ctcfinder.com/guide/deadlines-2026-2027/). You can test up to 90 days before a deadline. Free email reminders: https://ctcfinder.com/reminders/

## Frequently asked questions

### Does Valley Diesel Compliance offer mobile Clean Truck Check testing?

Yes. Valley Diesel Compliance says on CARB's tester list that it offers mobile testing, so it can come to your yard or job site. Ask about a trip fee when you call.

### Can Valley Diesel Compliance test a 2012 or older diesel truck?

Yes. Valley Diesel Compliance lists smoke opacity testing, the test CARB requires for diesel trucks of model year 2012 and older (no OBD). See [OBD vs smoke opacity](https://ctcfinder.com/guide/obd-vs-smoke-opacity-test/).

### How much does Valley Diesel Compliance charge for a Clean Truck Check?

Valley Diesel Compliance has not published prices with us; call (559) 373-0019 for a quote. Published California prices are usually $50–$135 per vehicle for an OBD test and $190–$200 for a smoke opacity test, plus CARB's annual fee ($32.13 in 2026). See the [cost guide](https://ctcfinder.com/guide/cost/).

### Is Valley Diesel Compliance a CARB-credentialed tester?

Valley Diesel Compliance appears on CARB's public Clean Truck Check tester list, last checked November 1, 2026. Only credentialed testers can submit results to CARB; after the test, confirm the passing result shows for your vehicle in CTC-VIS.

## Other testers nearby

- **[Gills Truck Check LLC](https://ctcfinder.com/tester/gills-truck-check-llc-clovis/)** — 3406 Mecca Ave, Clovis, CA 93619 — (209) 503-9939 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[OBD Testing](https://ctcfinder.com/tester/obd-testing-clovis/)** — 4137 Alamos Ave, Clovis, CA 93619 — (559) 241-9447 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Wicks Service](https://ctcfinder.com/tester/wicks-service-clovis/)** — 11363 E Herndon Ave, Clovis, CA 93619 — (559) 352-8968 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Randy's Smog](https://ctcfinder.com/tester/randys-smog-clovis/)** — 417 W Balsam Ln, Clovis, CA 93611 — (559) 416-9962 — 8 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[Serena Ruiz](https://ctcfinder.com/tester/serena-ruiz-clovis/)** — Clovis, CA 93611 — (559) 978-3250 — 8 mi. Services: mobile testing, OBD testing.
- **[Strictly Mobile Fleet Service](https://ctcfinder.com/tester/strictly-mobile-fleet-service-clovis/)** — 2480 Buckingham Way, Clovis, CA 93611 — (559) 456-0237 — 8 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.