---
title: "Merx Truck & Trailer Inc — Clean Truck Check, Channahon, IL"
description: "Merx Truck & Trailer Inc in Channahon, IL is on CARB's Clean Truck Check tester list. Offers OBD testing, motorhome testing. Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/merx-truck-and-trailer-inc-channahon-il/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Merx Truck & Trailer Inc

Clean Truck Check tester in Channahon, 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 | 22600 S Frontage Rd W, Channahon, IL 60410 |
| Phone | (815) 600-8689 |
| Mobile testing | No |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Merx Truck & Trailer 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 | 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 AIRLIMITS - Joliet-IL in Joliet, about 9 miles away. [See listing](https://ctcfinder.com/tester/airlimits-joliet-il-joliet-il/).

If you need a tester at your yard, the nearest listed tester that offers mobile testing is Lionstar Express Inc in Joliet, about 6 miles away. [See listing](https://ctcfinder.com/tester/lionstar-express-inc-joliet-il/).

## Clean Truck Check testers in Illinois

Merx Truck & Trailer Inc 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 Merx Truck & Trailer Inc offer mobile Clean Truck Check testing?

Not according to CARB's tester list; plan to bring the truck to the tester. The nearest listed mobile tester is [Lionstar Express Inc](https://ctcfinder.com/tester/lionstar-express-inc-joliet-il/) (about 6 miles).

### Can Merx Truck & Trailer Inc test a 2012 or older diesel truck?

Merx Truck & Trailer Inc does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [AIRLIMITS - Joliet-IL](https://ctcfinder.com/tester/airlimits-joliet-il-joliet-il/) (about 9 miles). Trucks from 2013 on get an OBD scan instead.

### How much does Merx Truck & Trailer Inc charge for a Clean Truck Check?

Merx Truck & Trailer Inc has not published prices with us; call (815) 600-8689 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 Merx Truck & Trailer Inc a CARB-credentialed tester?

Merx Truck & Trailer 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

- **[Lionstar Express Inc](https://ctcfinder.com/tester/lionstar-express-inc-joliet-il/)** — 1508 Baltz Dr, Joliet, IL 60431 — (224) 567-9381 — 6 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 — 6 mi. Services: mobile testing, OBD testing.
- **[Roman Znak](https://ctcfinder.com/tester/roman-znak-joliet-il/)** — Joliet, IL 60436 — (773) 732-2753 — 6 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 — 9 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[CHINGIZONE inc](https://ctcfinder.com/tester/chingizone-inc-joliet-il/)** — 300 Alessio Dr, Joliet, IL 60433 — (347) 241-2164 — 10 mi. Services: mobile testing, OBD testing.
- **[Diesel Dynasty Truck Repair LLC](https://ctcfinder.com/tester/diesel-dynasty-truck-repair-llc-joliet-il/)** — 21958 Cherry Hill Rd, Joliet, IL 60433 — (929) 454-5225 — 10 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.