{"vehicle":{"id":"2021_gmc_sierra","year":2021,"make":"GMC","model":"Sierra"},"code":"P12A6","generic":false,"description":null,"bulletins":{"as_of":"2026-10-19","count":6,"bulletins":[{"nhtsa_id":11022075,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-08-22","date":"2025-08-05","document_id":"PIT6396A","mfr_campaign":null,"component":"UNKNOWN OR OTHER","summary":"This PI communicates an issue with a SES MIL with DTC P2535, P12A6, P10DA and/or C111B maybe set after replacing the fuel pump driver module. Engineering is working on a fix, but in the meantime, dealers are to install a diode.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11022075-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11022075-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11022075"},{"nhtsa_id":11019825,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-06-29","date":"2025-06-11","document_id":"PIT6396","mfr_campaign":null,"component":"UNKNOWN OR OTHER","summary":"This PI communicates an issue with a SES MIL with DTC P2535, P12A6, P10DA and/or C111B maybe set after replacing the fuel pump driver module. Engineering is working on a fix, but in the meantime, dealers are to install a diode.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11019825-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11019825-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11019825"},{"nhtsa_id":10213034,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-06-02","date":"2022-05-19","document_id":"20-NA-218","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING","summary":"This service bulletin provides repair information to correct a customer concern of Possible Crank No Start or Extended Crank with DTC P12A6.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10213034-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10213034-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10213034"},{"nhtsa_id":10199253,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-07-19","date":"2021-05-07","document_id":"20NA218","mfr_campaign":null,"component":"ELECTRICAL SYSTEM","summary":"This service bulletin provides repair information to correct a customer concern of Possible Crank No Start or Extended Crank with DTC P12A6.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10199253-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10199253-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10199253"},{"nhtsa_id":10198862,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-07-06","date":"2021-05-07","document_id":"20NA218","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING","summary":"This service bulletin provides repair information to correct a customer concern of Possible Crank No Start or Extended Crank with DTC P12A6.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10198862-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10198862-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10198862"},{"nhtsa_id":10194090,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-05-24","date":"2021-04-23","document_id":"20NA218","mfr_campaign":null,"component":"POWER TRAIN","summary":"This service bulletin provides repair information to correct a customer concern of Possible Crank No Start or Extended Crank with DTC P12A6.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10194090-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10194090-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10194090"}],"url":"https://open.wenmarpro.com/makes/gmc/sierra/2021/bulletins?code=P12A6"},"related":{"components":[],"bulletins":[],"recalls":{"may_apply":true,"recalls":[],"lookup":{"nhtsa":"https://www.nhtsa.gov/recalls","tc":"https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng","maker":null}}},"url":"https://open.wenmarpro.com/makes/gmc/sierra/2021/codes/P12A6","note":"The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.","attribution":["Contains information licensed under the Open Government Licence – Canada."]}