---
title: "A+ Auto Repair — Clean Truck Check, Stockton, CA"
description: "A+ Auto Repair in Stockton, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address and nearby…"
url: "https://ctcfinder.com/tester/a-auto-repair-stockton/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# A+ Auto Repair

Clean Truck Check tester in Stockton, CA (San Joaquin 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 | 9170 Thornton Rd, Stockton, CA 95209 |
| County | San Joaquin County |
| Phone | (916) 932-3372 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks A+ Auto 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 Julian Flores in Stockton, about 3 miles away. [See listing](https://ctcfinder.com/tester/julian-flores-stockton/).

## Clean Truck Check testers in San Joaquin County

A+ Auto Repair is one of 124 testing businesses in San Joaquin County on CARB's public tester list. 111 of them offer mobile testing and 53 do smoke opacity tests. In Stockton itself there are 50 listed businesses, 43 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 A+ Auto Repair offer mobile Clean Truck Check testing?

Yes. A+ Auto 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 A+ Auto Repair test a 2012 or older diesel truck?

A+ Auto Repair does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Julian Flores](https://ctcfinder.com/tester/julian-flores-stockton/) (about 3 miles). Trucks from 2013 on get an OBD scan instead.

### How much does A+ Auto Repair charge for a Clean Truck Check?

A+ Auto Repair has not published prices with us; call (916) 932-3372 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 A+ Auto Repair a CARB-credentialed tester?

A+ Auto 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

- **[Julian Flores](https://ctcfinder.com/tester/julian-flores-stockton/)** — Stockton, CA 95210 — (209) 910-8422 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Khizar rehman](https://ctcfinder.com/tester/khizar-rehman-stockton/)** — Stockton, CA 95210 — (571) 474-8660 — 3 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[California Clean Truck Check](https://ctcfinder.com/tester/california-clean-truck-check-stockton/)** — 5250 Claremont Ave, Stockton, CA 95207 — (209) 636-7580 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Lecletus Griffin](https://ctcfinder.com/tester/lecletus-griffin-stockton/)** — Stockton, CA 95207 — (209) 905-9612 — 3 mi. Services: mobile testing, OBD testing.
- **[Golden Star Smog](https://ctcfinder.com/tester/golden-star-smog-stockton/)** — 4049 west lane, Stockton, CA 95204 — (209) 981-5142 — 5 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Lisa Guerrero](https://ctcfinder.com/tester/lisa-guerrero-stockton/)** — Stockton, CA 95204 — (209) 905-9411 — 5 mi. Services: mobile testing, OBD testing.