{"vehicle":{"id":"1999_chevrolet_express","year":1999,"make":"Chevrolet","model":"Express"},"code":"P0300","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":8,"bulletins":[{"nhtsa_id":10113177,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-15","date":"2013-08-05","document_id":"PIP4138N","mfr_campaign":null,"component":"ENGINE; ELECTRICAL SYSTEM","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/2013/MC-10113177-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2013/MC-10113177-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10113177"},{"nhtsa_id":10112702,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-15","date":"2013-01-08","document_id":"PIP4138M","mfr_campaign":null,"component":"ENGINE","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/2013/MC-10112702-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2013/MC-10112702-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10112702"},{"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"},{"nhtsa_id":10111977,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-15","date":"2014-01-07","document_id":"PIP5169","mfr_campaign":null,"component":"ENGINE","summary":"This Preliminary Information communication provides information to the technician about vehicles that are setting Diagnostic Trouble Code P0300 after engine repairs. Technician will need to ensure that injector connectors for cylinder 5-7 and 6-8 are not crossed.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10111977-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10111977-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10111977"},{"nhtsa_id":10111737,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-15","date":"2016-12-23","document_id":"PIP4138P","mfr_campaign":null,"component":"ELECTRICAL SYSTEM:SOFTWARE; ENGINE","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/2016/MC-10111737-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2016/MC-10111737-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10111737"},{"nhtsa_id":10010375,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2004-11-17","date":null,"document_id":"3081","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","summary":"SERVICE ENGINE SOON LIGHT AND P0300 WHEN TOWING, CRUISING UPHILL OR ON HARD ACCELERATION. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10010375"},{"nhtsa_id":10005439,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2004-02-27","date":"2004-01-01","document_id":"00149D","mfr_campaign":null,"component":"ELECTRICAL SYSTEM","summary":"MALFUNCTION INDICATOR LAMP ON WITH A P0300 SET AND A MISFIRE. VARIOUS MODELS INCLUDING 1996 - 1999 P32 MODELS. SIT BULLETIN 1416475. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10005439"},{"nhtsa_id":10004223,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2003-11-22","date":"2003-11-18","document_id":"00149C","mfr_campaign":null,"component":"ELECTRICAL SYSTEM","summary":"MALFUNCTION INDICATOR LAMP ON WITH A P0300 SET AND A MISFIRE. VARIOUS MODELS INCLUDING THE 1996-1999 P32 AND THE 1996-2002 GMC C/K TRUCK. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10004223"}],"url":"https://open.wenmarpro.com/makes/chevrolet/express/1999/bulletins?code=P0300"},"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/chevrolet/express/1999/codes/P0300","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."]}