{"nhtsa_id":10000185,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2003-02-14","date":"2002-10-01","document_id":"020730039","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"INFORMATION TO DEALERS REGARDING SERVICE BULLETIN 020730039 - FIRM TRANSMISSION SHIFTS, SHUDDER / CHUGGLE, TRANSMISSION WON'T DOWNSHIFT ON DECELERATION, SERVICE ENGINE SOON LIGHT ILLUMINATED, DIAGNOSTIC TROUBLE CODE (DTC) P0742 SET. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10000185","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":["P0742"],"topics":[],"vehicles":[{"make":"BUICK","model":"CENTURY","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_buick_century"]},{"make":"BUICK","model":"LESABRE","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_buick_lesabre"]},{"make":"BUICK","model":"PARK AVENUE","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_buick_park-avenue"]},{"make":"BUICK","model":"REGAL","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_buick_regal"]},{"make":"BUICK","model":"RENDEZVOUS","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_buick_rendezvous"]},{"make":"CHEVROLET","model":"IMPALA","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_chevrolet_impala"]},{"make":"CHEVROLET","model":"MONTE CARLO","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_chevrolet_monte-carlo"]},{"make":"CHEVROLET","model":"VENTURE","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_chevrolet_venture"]},{"make":"OLDSMOBILE","model":"AURORA","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_oldsmobile_aurora"]},{"make":"OLDSMOBILE","model":"SILHOUETTE","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_oldsmobile_silhouette"]},{"make":"PONTIAC","model":"AZTEK","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_pontiac_aztek"]},{"make":"PONTIAC","model":"BONNEVILLE","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_pontiac_bonneville"]},{"make":"PONTIAC","model":"GRAND PRIX","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_pontiac_grand-prix"]},{"make":"PONTIAC","model":"MONTANA","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_pontiac_montana"]}],"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":[]}