---
title: "Red Mechanic Shop Corp — Clean Truck Check, Mokena, IL"
description: "Red Mechanic Shop Corp in Mokena, IL is on CARB's Clean Truck Check tester list. Offers OBD testing, smoke opacity (non-OBD) testing, motorhome testing. Phone…"
url: "https://ctcfinder.com/tester/red-mechanic-shop-corp-mokena-il/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Red Mechanic Shop Corp

Clean Truck Check tester in Mokena, 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 | 8450 W 191st St Ste 14, Mokena, IL 60448 |
| Phone | (779) 707-9777 |
| Mobile testing | No |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Red Mechanic Shop Corp 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 |

If you need a tester at your yard, the nearest listed tester that offers mobile testing is Cheetah Repair Services Inc in Mokena, about 1 mile away. [See listing](https://ctcfinder.com/tester/cheetah-repair-services-inc-mokena-il/).

## Clean Truck Check testers in Illinois

Red Mechanic Shop Corp 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 Red Mechanic Shop Corp 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 [Cheetah Repair Services Inc](https://ctcfinder.com/tester/cheetah-repair-services-inc-mokena-il/) (about 1 mile).

### Can Red Mechanic Shop Corp test a 2012 or older diesel truck?

Yes. Red Mechanic Shop Corp 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 Red Mechanic Shop Corp charge for a Clean Truck Check?

Red Mechanic Shop Corp has not published prices with us; call (779) 707-9777 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 Red Mechanic Shop Corp a CARB-credentialed tester?

Red Mechanic Shop Corp 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

- **[Cheetah Repair Services Inc](https://ctcfinder.com/tester/cheetah-repair-services-inc-mokena-il/)** — 11109 W 189th Pl, Mokena, IL 60448 — (331) 444-9282 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[MBPro Servis LLC](https://ctcfinder.com/tester/mbpro-servis-llc-new-lenox-il/)** — 21660 S Moni Dr, New Lenox, IL 60451 — (630) 688-4316 — 4 mi. Services: OBD testing.
- **[CHINGIZONE inc](https://ctcfinder.com/tester/chingizone-inc-joliet-il/)** — 300 Alessio Dr, Joliet, IL 60433 — (347) 241-2164 — 8 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 — 8 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Estes](https://ctcfinder.com/tester/estes-joliet-il/)** — 2300 Manhattan Rd, Joliet, IL 60433 — (708) 955-9476 — 8 mi. Services: OBD testing.
- **[Mordo Repairs Inc](https://ctcfinder.com/tester/mordo-repairs-inc-lemont-il/)** — 32 Oak Ct, Lemont, IL 60439 — (630) 754-9569 — 11 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.