You need CCDET I if you perform:
OBD Testing or SAE J1667 Snap Acceleration Testing and would like hands-on in-person instruction.
This 6-hour course covers the requirements of the California Air Resources Board’s Clean Truck Check regulation, formerly known as Heavy-Duty Inspection and Maintenance (HD I/M). CARB’s Clean Truck Check curriculum and certification exam are available for free online.
This CCDET I: Clean Truck Check course was developed for those who prefer in-person instruction and who would like hands-on instruction in performing the SAE J1667 Snap Acceleration Smoke Test and Onboard Diagnostic Testing. The CCDET I version of Clean Truck check is not free. This in-person class costs $175 and is administered by the California Council on Diesel Education and Technology (CCDET), not directly by CARB.
It is important to note that CARB remains the only credentialing entity for Clean Truck Check. Participants who complete this CCDET I course must still take and pass CARB’s online exam to become Credentialed Testers under the regulation.
twi@lattc.edu | (213) 763-3997
Have questions about CCDET I: Clean Truck Check? 
Contact LA Trade Tech College & CCDET
Information Source: LA Trade Tech College & CCDET | eventbrite

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