{"nhtsa_id":10090565,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-02-06","date":"2014-09-24","document_id":"14628","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:MANUAL TRANSMISSION","mfr_system":null,"summary":"14628 - SERVICE UPDATE. THIS BULLETIN PROVIDES A SERVICE PROCEDURE TO PERFORM A DRIVE AUDIT ON ALL VEHICLES IN INVENTORY THAT ARE EQUIPPED WITH AN 8 SPEED AUTOMATIC TRANSMISSION (M5U). A SMALL NUMBER OF TRANSMISSIONS MAY DEVELOP A CRACK IN THE TRIPLE CLUTCH HOUSING INTERNAL TO THE TRANSMISSION, LEADING TO NOISE, LOSS OF REVERSE GEAR, AND LIMITING THE DRIVER TO 3RD AND 4TH FORWARD GEARS. THE DRIVE AUDIT MUST BE COMPLETED BEFORE VEHICLE DELIVERY (AND IN ADDITION TO NORMAL PRE-DELIVERY INSPECTION ACTIVITIES) TO IDENTIFY VEHICLES WITH THE CONDITION. IF THE CONDITION IS FOUND, DEALERS ARE TO REPLACE THE TRANSMISSION UNDER THE EXISTING EXCHANGE PROGRAM, SEE PIP5200A FOR DETAILS.","document":null,"url":"https://open.wenmarpro.com/bulletins/10090565","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"manual-transmission","name":"Manual transmission","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"CORVETTE","year_from":2015,"year_to":2015,"match":"exact","vehicle_ids":["2015_chevrolet_corvette"]}],"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":[]}