---
title: "Gan-Trans LTD — Clean Truck Check, San Leandro, CA"
description: "Gan-Trans LTD in San Leandro, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome…"
url: "https://ctcfinder.com/tester/gan-trans-ltd-san-leandro/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Gan-Trans LTD

Clean Truck Check tester in San Leandro, CA (Alameda 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 | San Leandro, CA 94577 |
| County | Alameda County |
| Phone | (510) 357-3100 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Gan-Trans LTD 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 |

## Clean Truck Check testers in Alameda County

Gan-Trans LTD is one of 85 testing businesses in Alameda County on CARB's public tester list. 79 of them offer mobile testing and 37 do smoke opacity tests. In San Leandro itself there are 8 listed businesses, 8 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 Gan-Trans LTD offer mobile Clean Truck Check testing?

Yes. Gan-Trans LTD 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 Gan-Trans LTD test a 2012 or older diesel truck?

Yes. Gan-Trans LTD 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 Gan-Trans LTD charge for a Clean Truck Check?

Gan-Trans LTD has not published prices with us; call (510) 357-3100 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 Gan-Trans LTD a CARB-credentialed tester?

Gan-Trans LTD 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

- **[Bigge Crane & Rigging](https://ctcfinder.com/tester/bigge-crane-and-rigging-san-leandro/)** — 10700 Bigge St, San Leandro, CA 94577 — (510) 330-3372 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Pape Kenworth.](https://ctcfinder.com/tester/pape-kenworth-san-leandro/)** — San Leandro, CA 94577 — (510) 335-5085 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[UpTime Direct LLC](https://ctcfinder.com/tester/uptime-direct-llc-san-leandro/)** — 1515 Aurora Dr 203F, San Leandro, CA 94577 — (510) 207-8575 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Jerome Moore](https://ctcfinder.com/tester/jerome-moore-oakland/)** — Oakland, CA 94603 — (510) 857-2778 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[King Fleet](https://ctcfinder.com/tester/king-fleet-oakland/)** — 72 98th Ave, Oakland, CA 94603 — (510) 990-7954 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[KingFleet Inc](https://ctcfinder.com/tester/kingfleet-inc-oakland/)** — 72 98th Ave, Oakland, CA 94603 — (916) 752-6134 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.