Your buddy John went through, came by here to check for codes first...we cleared one code, boost circuit A..blah, blah...he said they didn't even hook up a scan tool, just a visual I think, but they might have (incorrectly) put the sniffer on it...
Log onto the TDOT page and read, and PRINT a copy of the procedure for diesel inspections...
The TDOT page clearly says that the diesel requirements are satisfied as long as there are no emission codes stored in the PCM...they are only supposed to hook up an OBDII reader, no sniff...seems the techs aren't even clear on what to do... /ubbthreads/images/graemlins/rolleyes.gif
take care~
Dave