Authorized Dealers - Software Upgrade for Diesel Trucks

This page last reviewed April 15, 2010

Authorized Dealers

This page lists authorized dealers in California that can install Low NOx Software for eligible 1993-1998 diesel engines by area and by engine manufacturer.

Dealers by Area

Bay Area (Includes Alameda, Contra Costa, San Francisco, and San Mateo Counties)

Central Coast (Includes Monterey, San Benito, Sant Clara, Santa Cruz Counties)

Central Valley (Includes Fresno, Kings, Madera, Mariposa, Merced, Tulare Counties)

Kern (Includes Inyo, Kern Counties)

Los Angeles / Orange (Includes Los Angeles, Orange Counties)

Redwood Empire (Includes Del Norte, Humboldt, Lake, Mendocino Counties)

Sacramento Area (Includes Amador, Colusa, El Dorado, Nevada, Placer, Sacramento, Sierra, Solano, Sutter, Yolo, and Yuba Counties)

San Bernardino / Riverside (Includes Riverside, San Bernarndino Counties)

San Diego / Imperial  (Includes Imperial, San Diego Counties)

San Joaquin Area (Includes Alpine, Calaveras, Mono, San Joaquin, Stanislaus, and Tuolumne Counties)

Sierra Cascade (Includes Butte, Glenn, Lassen, Modoc, Plumas, Shasta, Siskiyou, Tehama, Trinity Counties)

Tri-County (Includes San Luis Obispo, Santa Barbara, Ventura Counties)

Wine County (Includes Marin, Napa, Sonoma Counties)

Dealers by Manufacturer



Detroit Diesel Corporation

Mack / Renault