---
title: "Dion & Sons, Inc. — Clean Truck Check, Loma Linda, CA"
description: "Dion & Sons, Inc. in Loma Linda, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome…"
url: "https://ctcfinder.com/tester/dion-and-sons-inc-loma-linda/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Dion & Sons, Inc.

Clean Truck Check tester in Loma Linda, CA (San Bernardino 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 | Loma Linda, CA 92354 |
| County | San Bernardino County |
| Phone | (909) 490-6860 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Dion & Sons, Inc. 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 San Bernardino County

Dion & Sons, Inc. is one of 277 testing businesses in San Bernardino County on CARB's public tester list. 243 of them offer mobile testing and 98 do smoke opacity tests.

## 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 Dion & Sons, Inc. offer mobile Clean Truck Check testing?

Yes. Dion & Sons, Inc. 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 Dion & Sons, Inc. test a 2012 or older diesel truck?

Yes. Dion & Sons, Inc. 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 Dion & Sons, Inc. charge for a Clean Truck Check?

Dion & Sons, Inc. has not published prices with us; call (909) 490-6860 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 Dion & Sons, Inc. a CARB-credentialed tester?

Dion & Sons, Inc. 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

- **[Auto Smog](https://ctcfinder.com/tester/auto-smog-san-bernardino/)** — 738 S Waterman Ave Suite A17, San Bernardino, CA 92408 — (951) 334-2882 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[FleetServ](https://ctcfinder.com/tester/fleetserv-san-bernardino/)** — 725 S Lugo Ave, San Bernardino, CA 92408 — (951) 226-0315 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[SmogCheck](https://ctcfinder.com/tester/smogcheck-san-bernardino/)** — San Bernardino, CA 92408 — (951) 953-1892 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Aaron Gutierrez](https://ctcfinder.com/tester/aaron-gutierrez-colton/)** — Colton, CA 92324 — (951) 241-5693 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[Alan Hernandez](https://ctcfinder.com/tester/alan-hernandez-colton/)** — Colton, CA 92324 — (323) 841-4518 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[CDS](https://ctcfinder.com/tester/cds-colton/)** — 310 Rexford St, Colton, CA 92324 — (805) 833-1604 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.