{"nhtsa_id":10032886,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2010-06-08","date":"2009-06-01","document_id":"PIP-4651","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"SATURN/PONTIAC/CHEVROLET: SOFT SHIFTS, ERRATIC SHIFTS, DTC P1811. VEHICLES WITH A HYDRAMATIC 4T45 TRANSAXLE MAY HAVE SOFT SHIFTS OR SHIFTS ERRATICALLY. THESE CONDITIONS MAY APPEAR INTERMITTENTLY OR SET A DTC P1811. DURING DIAGNOSIS, A LOW OR HIGH LINE PRESSURE (ACTUAL VERSUS DESIRED) MAY BE OBSERVED. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10032886","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":["P1811"],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"COBALT","year_from":2007,"year_to":2009,"match":"exact","vehicle_ids":["2007_chevrolet_cobalt","2008_chevrolet_cobalt","2009_chevrolet_cobalt"]},{"make":"CHEVROLET","model":"HHR","year_from":2007,"year_to":2009,"match":"exact","vehicle_ids":["2007_chevrolet_hhr","2008_chevrolet_hhr","2009_chevrolet_hhr"]},{"make":"CHEVROLET","model":"MALIBU","year_from":2007,"year_to":2009,"match":"exact","vehicle_ids":["2007_chevrolet_malibu","2008_chevrolet_malibu","2009_chevrolet_malibu"]},{"make":"SATURN","model":"AURA","year_from":2007,"year_to":2008,"match":"exact","vehicle_ids":["2007_saturn_aura","2008_saturn_aura"]},{"make":"SATURN","model":"ION","year_from":2007,"year_to":2007,"match":"exact","vehicle_ids":["2007_saturn_ion"]},{"make":"SATURN","model":"VUE","year_from":2007,"year_to":2009,"match":"exact","vehicle_ids":["2007_saturn_vue","2008_saturn_vue","2009_saturn_vue"]}],"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":[]}