---
title: "Ciongas & CO — Clean Truck Check, Plainfield, IL"
description: "Ciongas & CO in Plainfield, IL is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD) testing. Phone, address…"
url: "https://ctcfinder.com/tester/ciongas-and-co-plainfield-il/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Ciongas & CO

Clean Truck Check tester in Plainfield, IL.

> 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 | 6906 Townsend Blvd, Plainfield, IL 60586 |
| Phone | (630) 915-4412 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Ciongas & CO 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 | Not listed |

## Clean Truck Check testers in Illinois

Ciongas & CO is one of 65 testing businesses in Illinois on CARB's public tester list. 44 of them offer mobile testing and 19 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 Ciongas & CO offer mobile Clean Truck Check testing?

Yes. Ciongas & CO 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 Ciongas & CO test a 2012 or older diesel truck?

Yes. Ciongas & CO 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 Ciongas & CO charge for a Clean Truck Check?

Ciongas & CO has not published prices with us; call (630) 915-4412 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 Ciongas & CO a CARB-credentialed tester?

Ciongas & CO 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

- **[Lionstar Express Inc](https://ctcfinder.com/tester/lionstar-express-inc-joliet-il/)** — 1508 Baltz Dr, Joliet, IL 60431 — (224) 567-9381 — 5 mi. Services: mobile testing, OBD testing.
- **[SSM Trucking Inc.](https://ctcfinder.com/tester/ssm-trucking-inc-joliet-il/)** — 1508 Baltz Dr, Joliet, IL 60431 — (224) 567-9245 — 5 mi. Services: mobile testing, OBD testing.
- **[Atmos Shop](https://ctcfinder.com/tester/atmos-shop-plainfield-il/)** — 23855 S Aero Ct, Plainfield, IL 60585 — (347) 570-6537 — 5 mi. Services: mobile testing, OBD testing.
- **[Transmc Truck Service INC](https://ctcfinder.com/tester/transmc-truck-service-inc-plainfield-il/)** — 12505 S Industrial Dr E, Plainfield, IL 60585 — (331) 444-7575 — 5 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[AIRLIMITS - Joliet-IL](https://ctcfinder.com/tester/airlimits-joliet-il-joliet-il/)** — Joliet, IL 60435 — (800) 788-5241 — 6 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[The Second Generation Inc.](https://ctcfinder.com/tester/the-second-generation-inc-crest-hill-il/)** — 1724 Russ Way, Crest Hill, IL 60403 — (224) 595-1391 — 6 mi. Services: OBD testing, motorhome testing.