BUICK, CADILLAC, CHEVROLET, GEO, GMC
21-NA-124
Manufacturer communications
- Publication date
- 2022-12-14
- Received by NHTSA
- 2023-01-06
- NHTSA record numbers
- 10228888
Manufacturer summary
Original wording in English
This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.
Reported code forms
Check vehicle applicability
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Cadillac | CT4 | 2023 |
| Cadillac | CT4 | 2022 |
| Cadillac | CT4 | 2021 |
| Cadillac | CT4 | 2020 |
| Cadillac | CT5 | 2023 |
| Cadillac | CT5 | 2022 |
| Cadillac | CT5 | 2021 |
| Cadillac | CT5 | 2020 |
| Cadillac | CT6 | 2021 |
| Cadillac | CT6 | 2020 |
| Cadillac | CT6 | 2019 |
| Cadillac | CT6 | 2018 |
| Cadillac | CT6 | 2017 |
| Cadillac | CT6 | 2016 |
| Cadillac | CT6 | 2015 |
| Cadillac | CT6 | 2014 |
| Cadillac | CT6 | 2013 |
| Cadillac | CTS | 2019 |
| Cadillac | CTS | 2018 |
| Cadillac | CTS | 2017 |
| Cadillac | CTS | 2016 |
| Cadillac | CTS | 2015 |
| Cadillac | CTS | 2014 |
| Cadillac | CTS | 2013 |
| Cadillac | CTS | 2012 |
| Cadillac | CTS | 2011 |
| Cadillac | CTS | 2010 |
| Cadillac | CTS | 2009 |
| Cadillac | CTS | 2008 |
| Cadillac | CTS | 2007 |