Diesel Master, Inc.
10842 S Harlan Rd, French Camp, CA, 95231
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- Service type
- Mobile — comes to your yard · also has a shop location
- Service area
- San Joaquin County
- Test types
- OBD, Smoke opacity
- Hours
- Call to confirm
- Website
- Not listed
- Source
- California Trucking Association preferred tester listNot yet verified against CARB's tester list
- Listing last checked
- 9/26/2026
Ratings shown are Google ratings and link to the Google Maps listing. We never store review text. Always confirm credentials on CARB's public tester list.
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