---
title: "JM Welding & Heavy Repair — Clean Truck Check, Lancaster, CA"
description: "JM Welding & Heavy Repair in Lancaster, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address…"
url: "https://ctcfinder.com/tester/jm-welding-and-heavy-repair-lancaster/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# JM Welding & Heavy Repair

Clean Truck Check tester in Lancaster, CA (Los Angeles 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 | 25316 W Avenue B, Lancaster, CA 93536 |
| County | Los Angeles County |
| Phone | (661) 433-6210 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks JM Welding & Heavy Repair 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 J&S mobile clean truck checks in Lancaster, about 1 mile away. [See listing](https://ctcfinder.com/tester/j-and-s-mobile-clean-truck-checks-lancaster/).

## Clean Truck Check testers in Los Angeles County

JM Welding & Heavy Repair is one of 516 testing businesses in Los Angeles County on CARB's public tester list. 465 of them offer mobile testing and 190 do smoke opacity tests. In Lancaster itself there are 16 listed businesses, 16 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 JM Welding & Heavy Repair offer mobile Clean Truck Check testing?

Yes. JM Welding & Heavy Repair 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 JM Welding & Heavy Repair test a 2012 or older diesel truck?

JM Welding & Heavy Repair does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [J&S mobile clean truck checks](https://ctcfinder.com/tester/j-and-s-mobile-clean-truck-checks-lancaster/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does JM Welding & Heavy Repair charge for a Clean Truck Check?

JM Welding & Heavy Repair has not published prices with us; call (661) 433-6210 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 JM Welding & Heavy Repair a CARB-credentialed tester?

JM Welding & Heavy Repair 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

- **[Clean Truck Repair LLC](https://ctcfinder.com/tester/clean-truck-repair-llc-lancaster/)** — 43846 Marbella Street, Lancaster, CA 93536 — (661) 499-9343 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[J&S mobile clean truck checks](https://ctcfinder.com/tester/j-and-s-mobile-clean-truck-checks-lancaster/)** — 42504 62Nd Street West, Lancaster, CA 93536 — (661) 317-6206 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Jeremy Uribe](https://ctcfinder.com/tester/jeremy-uribe-lancaster/)** — Lancaster, CA 93536 — (805) 368-1622 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Jomars CTC](https://ctcfinder.com/tester/jomars-ctc-lancaster/)** — 42656 Tempo Drive, Lancaster, CA 93536 — (626) 481-7599 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Luis Murcia](https://ctcfinder.com/tester/luis-murcia-lancaster/)** — Lancaster, CA 93536 — (213) 245-0700 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Quartz Hill Test Only](https://ctcfinder.com/tester/quartz-hill-test-only-lancaster/)** — 42254 50th St W, Lancaster, CA 93536 — (805) 551-2565 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.