{"nhtsa_id":37959,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1995-02-09","date":"1994-12-01","document_id":"CAMP/93C56","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"GENERAL MOTORS HAS DETERMINED THAT CERTAIN 1993 M/L AND G VANS EQUIPPED WITH CRUISE CONTROL MAY EXPERIENCE A CONDITION AT TEMPERATURES BELOW 32 DEGREES FAHRENHEIT, WHERE THE TRANSMISSION WILL NOT SHIFT OUT OF PARK WITH THE BRAKE PEDAL DEPRESSED. TO PREVENT THIS CONDITION FROM OCCURRING, DEALERS ARE TO REPLACE THE CRUISE CONTROL VACUUM RELEASE VALVE, AND CHECK AND ADJUST THE BTSI SOLENOID CABLE AS NEEDED. *TW","document":null,"url":"https://open.wenmarpro.com/bulletins/37959","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"ASTRO","year_from":1993,"year_to":1993,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"G SERIES","year_from":1993,"year_to":1993,"match":"exact","vehicle_ids":["1993_chevrolet_g-series"]}],"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":[]}