{"nhtsa_id":10044821,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2012-08-01","date":"2012-06-01","document_id":"PI-0789","mfr_campaign":null,"replaces":null,"component":"SUSPENSION:FRONT:SPRINGS:AIR SUSPENSION:LINES AND FITTINGS","mfr_system":null,"summary":"MACK TRUCK: INFORMATION REGARDING THE SLEEPER CAB SUSPENSION LEVELING VALVE BRACKET THAT WAS INSTALLED INCORRECTLY. ALSO, THE SUPPORT BRACKET FOR AIR SPRING, INCORRECTLY MOUNTED ON FRAME, CAUSING CAB SHOCK TO EXTEND FULLY WHEN AIR SPRING IS INFLATED. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10044821","components":[{"id":"suspension","name":"Suspension","parent":null},{"id":"air-suspension","name":"Air suspension","parent":"suspension"}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"GRANITE (GU)","year_from":2012,"year_to":2013,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"GU","year_from":2006,"year_to":2011,"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":[]}