Sorry, the NHTSA has not posted this TSB document yet.
You can still get the detailed info from Chevrolet for this TSB. Call your local Chevrolet dealer's service department & ask for a copy of TSB# 17-NA-321.
Affected Component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR
Exhaust Smell and/or Leak with Possible Malfunction Indicator Lamp Illuminated
Condition
Some customers may comment on an exhaust smell and/or leak with possible malfunction indicator lamp illuminated.
During diagnosis, a technician may find DTC P0430 and/or P0420.
Cause This may be due to a crack around the catalytic mounting flange.
Correction Replace converter assembly with new service part.
