| Coast Counties Peterbilt (San Jose) | Russ Agi | (408) 453-5510 |
| Coast Counties Peterbilt (San Leandro) | Mike Perez | (831) 758-2441 |
| Cummins West | Mike Murphy, Jerry Moeckel, Dan Nevin, Tripp Heller | (510) 351-6101 |
| Diesel Emissions Service (Oakland) | Todd Jacobs | (510) 635-5361 |
| Diesel Emissions Service (Redding) | Steve Hoke | (530) 241-3950 |
| Exhaust Emission Reduction Specialists | Mike Leff | (951) 734-3400 |
| Holt of California | Reno Righetti, Mike Dettloff | (209) 649-2785, (916) 869-9456 |
| NorCal Kenworth-Sacramento | Todd Mingear | (916) 371-3372 |