---
title: "Central Diesel Fleet Union INC — Clean Truck Check, San Jacinto, CA"
description: "Central Diesel Fleet Union INC in San Jacinto, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD)…"
url: "https://ctcfinder.com/tester/central-diesel-fleet-union-inc-san-jacinto/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Central Diesel Fleet Union INC

Clean Truck Check tester in San Jacinto, CA (Riverside 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 | 650 S Grand Ave, San Jacinto, CA 92582 |
| County | Riverside County |
| Phone | (909) 272-5464 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Central Diesel Fleet Union 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 Riverside County

Central Diesel Fleet Union INC is one of 251 testing businesses in Riverside County on CARB's public tester list. 233 of them offer mobile testing and 102 do smoke opacity tests. In San Jacinto itself there are 7 listed businesses, 7 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 Central Diesel Fleet Union INC offer mobile Clean Truck Check testing?

Yes. Central Diesel Fleet Union 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 Central Diesel Fleet Union INC test a 2012 or older diesel truck?

Yes. Central Diesel Fleet Union 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 Central Diesel Fleet Union INC charge for a Clean Truck Check?

Central Diesel Fleet Union INC has not published prices with us; call (909) 272-5464 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 Central Diesel Fleet Union INC a CARB-credentialed tester?

Central Diesel Fleet Union 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

- **[A-Z Transport Tech LLC](https://ctcfinder.com/tester/a-z-transport-tech-llc-san-jacinto/)** — 1975 El Milagro Rd, San Jacinto, CA 92582 — (951) 570-3538 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[Diesel Compliance Pro](https://ctcfinder.com/tester/diesel-compliance-pro-san-jacinto/)** — 2989 Crooked Branch Way, San Jacinto, CA 92582 — (626) 251-8944 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[First Choice Smog](https://ctcfinder.com/tester/first-choice-smog-san-jacinto/)** — 494 N Scovell Ave, San Jacinto, CA 92582 — (951) 327-3237 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[James Zamora](https://ctcfinder.com/tester/james-zamora-nuevo/)** — Nuevo, CA 92567 — (951) 442-2629 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Roberts concrete cutting](https://ctcfinder.com/tester/roberts-concrete-cutting-nuevo/)** — Nuevo, CA 92567 — (909) 749-2931 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Salvador Torres](https://ctcfinder.com/tester/salvador-torres-nuevo/)** — Nuevo, CA 92567 — (951) 452-9189 — 4 mi. Services: mobile testing, OBD testing.