---
title: "Chevez Wilber — Clean Truck Check, Ontario, CA | CTC Finder"
description: "Chevez Wilber in Ontario, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address and nearby…"
url: "https://ctcfinder.com/tester/chevez-wilber-ontario/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Chevez Wilber

Clean Truck Check tester in Ontario, 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 | Ontario, CA 91762 |
| County | San Bernardino County |
| Phone | (323) 448-5771 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Chevez Wilber 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 | Not listed |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Carlos Pinal in Ontario, about 1 mile away. [See listing](https://ctcfinder.com/tester/carlos-pinal-ontario/).

## Clean Truck Check testers in San Bernardino County

Chevez Wilber 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. In Ontario itself there are 31 listed businesses, 30 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 Chevez Wilber offer mobile Clean Truck Check testing?

Yes. Chevez Wilber 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 Chevez Wilber test a 2012 or older diesel truck?

Chevez Wilber does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Carlos Pinal](https://ctcfinder.com/tester/carlos-pinal-ontario/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Chevez Wilber charge for a Clean Truck Check?

Chevez Wilber has not published prices with us; call (323) 448-5771 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 Chevez Wilber a CARB-credentialed tester?

Chevez Wilber 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

- **[Aaron Davis -CLEAN TRUCK MOBILE TESTERS](https://ctcfinder.com/tester/aaron-davis-clean-truck-mobile-testers-ontario/)** — 2632 E Harlow Ln, Ontario, CA 91762 — (310) 345-7661 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Avid Smog, Inc](https://ctcfinder.com/tester/avid-smog-inc-ontario/)** — 1409 W Holt Bl, Ontario, CA 91762 — (909) 292-6926 — 1 mi. Services: mobile testing, OBD testing.
- **[Brian Tran](https://ctcfinder.com/tester/brian-tran-ontario/)** — Ontario, CA 91762 — (714) 417-3611 — 1 mi. Services: OBD testing.
- **[Carlos Pinal](https://ctcfinder.com/tester/carlos-pinal-ontario/)** — Ontario, CA 91762 — (626) 620-3167 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Gl Welding and Repair](https://ctcfinder.com/tester/gl-welding-and-repair-ontario/)** — 1525 S Briar Av, Ontario, CA 91762 — (626) 374-3357 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Juan Zamora](https://ctcfinder.com/tester/juan-zamora-ontario/)** — Ontario, CA 91762 — (909) 331-9442 — 1 mi. Services: mobile testing, OBD testing.