{"vehicle":{"id":"1999_gmc_sierra","year":1999,"make":"GMC","model":"Sierra"},"code":"P0308","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":1,"bulletins":[{"nhtsa_id":10112697,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-15","date":"2012-12-27","document_id":"PIP4138L","mfr_campaign":null,"component":"EQUIPMENT:MECHANICAL; POWER TRAIN","summary":"This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on, engine misfire, and/or engine noise. Technician may find Diagnostic Trouble Codes P0300-P0308. If published Service Information diagnostics does not isolate the cause of this concern technician should check for a worn camshaft lobe and/or lifter roller, a sticking valve, valve leakage, a broken valve spring, and a collapsed active fuel management lifter.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2012/MC-10112697-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2012/MC-10112697-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10112697"}],"url":"https://open.wenmarpro.com/makes/gmc/sierra/1999/bulletins?code=P0308"},"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/1999/codes/P0308","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."]}