BUICK, CHEVROLET
18NA331
Manufacturer communications
- Publication date
- 2018-11-01
- Received by NHTSA
- 2019-03-25
- NHTSA record numbers
- 10155109
Manufacturer summary
Original wording in English
This bulletin provides a procedure to reprogram the ECM to correct a condition of MIL On, DTC P0420 Set.
Reported code forms
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