{"nhtsa_id":612133,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2000-06-06","date":"2000-02-01","document_id":"99066A","mfr_campaign":null,"replaces":"99066","component":"FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS","mfr_system":null,"summary":"SOME VEHICLES MAY EXPERIENCE A SERVICE ENGINE SOON LIGHT, MISFIRE, ROUGH IDLE OR HARD START DUE TO A DEPOSIT BUILD UP ON THE SEQUENTIAL CENTRAL PORT FUEL INJECTOR (SCPI) POPPET VALVE(S). *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/612133","components":[{"id":"fuel-system","name":"Fuel system","parent":null},{"id":"fuel-injector","name":"Fuel injection","parent":"fuel-system"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"C SERIES","year_from":1996,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"G SERIES","year_from":1996,"year_to":1996,"match":"exact","vehicle_ids":["1996_chevrolet_g-series"]},{"make":"CHEVROLET","model":"G SERIES","year_from":1997,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"K SERIES","year_from":1996,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"L SERIES","year_from":1996,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"M SERIES","year_from":1996,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"P SERIES","year_from":1996,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"S SERIES","year_from":1996,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"T SERIES","year_from":1996,"year_to":1996,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"T SERIES","year_from":1997,"year_to":1998,"match":"exact","vehicle_ids":["1997_chevrolet_t-series","1998_chevrolet_t-series"]},{"make":"CHEVROLET","model":"W4","year_from":1996,"year_to":1998,"match":"exact","vehicle_ids":["1996_chevrolet_w4","1997_chevrolet_w4","1998_chevrolet_w4"]},{"make":"FORD","model":"L SERIES","year_from":1996,"year_to":1996,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"C SERIES","year_from":1996,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"G SERIES","year_from":1996,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"K SERIES","year_from":1996,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"L SERIES","year_from":1997,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"M SERIES","year_from":1996,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"P SERIES","year_from":1996,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"S SERIES","year_from":1996,"year_to":1998,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"T SERIES","year_from":1996,"year_to":1996,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"T SERIES","year_from":1997,"year_to":1998,"match":"exact","vehicle_ids":["1997_gmc_t-series","1998_gmc_t-series"]},{"make":"GMC","model":"W4","year_from":1996,"year_to":1998,"match":"exact","vehicle_ids":["1996_gmc_w4","1997_gmc_w4","1998_gmc_w4"]},{"make":"OLDSMOBILE","model":"T SERIES","year_from":1996,"year_to":1998,"match":null,"vehicle_ids":[]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}