---
title: "Prime Smog Check & Repair LLC — Clean Truck Check, Gilroy, CA"
description: "Prime Smog Check & Repair LLC in Gilroy, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address…"
url: "https://ctcfinder.com/tester/prime-smog-check-and-repair-llc-gilroy/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Prime Smog Check & Repair LLC

Clean Truck Check tester in Gilroy, CA (Santa Clara 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 | 505 Mayock Rd Suite E-17, Gilroy, CA 95020 |
| County | Santa Clara County |
| Phone | (408) 337-1547 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Prime Smog Check & Repair LLC 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 Maggiora Bro Drilling in Gilroy, about 1 mile away. [See listing](https://ctcfinder.com/tester/maggiora-bro-drilling-gilroy/).

## Clean Truck Check testers in Santa Clara County

Prime Smog Check & Repair LLC is one of 79 testing businesses in Santa Clara County on CARB's public tester list. 67 of them offer mobile testing and 27 do smoke opacity tests. In Gilroy itself there are 13 listed businesses, 10 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 Prime Smog Check & Repair LLC offer mobile Clean Truck Check testing?

Yes. Prime Smog Check & Repair LLC 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 Prime Smog Check & Repair LLC test a 2012 or older diesel truck?

Prime Smog Check & Repair LLC does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Maggiora Bro Drilling](https://ctcfinder.com/tester/maggiora-bro-drilling-gilroy/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Prime Smog Check & Repair LLC charge for a Clean Truck Check?

Prime Smog Check & Repair LLC has not published prices with us; call (408) 337-1547 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 Prime Smog Check & Repair LLC a CARB-credentialed tester?

Prime Smog Check & Repair LLC 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

- **[B&L Truck and Tractor Repair](https://ctcfinder.com/tester/b-and-l-truck-and-tractor-repair-gilroy/)** — 8594 Forest St, Gilroy, CA 95020 — (831) 889-8611 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Cruz Tire & Truck Repair](https://ctcfinder.com/tester/cruz-tire-and-truck-repair-gilroy/)** — 5870 Monterey Rd A, Gilroy, CA 95020 — (909) 533-0433 — 1 mi. Services: mobile testing, OBD testing.
- **[Dhillon CARB Testing](https://ctcfinder.com/tester/dhillon-carb-testing-gilroy/)** — 1125 Violet Way, Gilroy, CA 95020 — (408) 775-9600 — 1 mi. Services: mobile testing, OBD testing.
- **[Maggiora Bro Drilling](https://ctcfinder.com/tester/maggiora-bro-drilling-gilroy/)** — Gilroy, CA 95020 — (669) 469-9223 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Mateo Huerta](https://ctcfinder.com/tester/mateo-huerta-gilroy/)** — Gilroy, CA 95020 — (650) 290-0652 — 1 mi. Services: mobile testing, OBD testing.
- **[Mosher Equipment Services LLC](https://ctcfinder.com/tester/mosher-equipment-services-llc-gilroy/)** — 1290 Masten Ave, Gilroy, CA 95020 — (408) 660-5693 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.