{"nhtsa_id":10203144,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-11-05","date":"2021-10-28","document_id":"KC-138","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"(Back Office Only) Mack Chassis - With Allison Transmission Displaying Message \" Neutral Secured Not Detected \" When A Regen Has Been Requested To Be Performed And Will Not","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10203144-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10203144-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10203144","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"MACK","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]}],"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":[]}