{"vehicle":{"id":"2005_gmc_sierra","year":2005,"make":"GMC","model":"Sierra"},"code":"P0174","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":3,"bulletins":[{"nhtsa_id":10015784,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2005-08-12","date":"2004-12-01","document_id":"612","mfr_campaign":null,"component":"SERVICE BRAKES, HYDRAULIC","summary":"SERVICE ENGINE SOON LIGHT ILLUMINATED. DIAGNOSTIC TROUBLE CODE (DTC) P0171 AND/OR P0174 (LEAN FUEL TRIM) MAY BE SET. MASTER CYLINDER O-RING DAMAGED. GM TECH LINK. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10015784"},{"nhtsa_id":10014870,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2005-05-11","date":null,"document_id":"3232","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","summary":"1999 - 2005 GEN II COLD ENGINE MISFIRE AT IDLE WITH POSSIBLE P0171 AND/OR P0174. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10014870"},{"nhtsa_id":10011595,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2005-01-27","date":null,"document_id":"3250","mfr_campaign":null,"component":"SERVICE BRAKES, AIR","summary":"SERVICE ENGINE SOON LIGHT ILLUMINATED WITH DIAGNOSTIC TROUBLE CODE P0171 OR P0174 SET. THE ROOT CAUSE MAY BE A DAMAGED OR MISSING SEAL FROM THE MASTER CYLINDER TO THE BRAKE BOOSTER. *EH","document":null,"url":"https://open.wenmarpro.com/bulletins/10011595"}],"url":"https://open.wenmarpro.com/makes/gmc/sierra/2005/bulletins?code=P0174"},"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/2005/codes/P0174","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."]}