{"nhtsa_id":10043091,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2012-02-21","date":"2011-09-01","document_id":"PI-0752","mfr_campaign":null,"replaces":null,"component":"STEERING:HYDRAULIC POWER ASSIST:PUMP","mfr_system":null,"summary":"MACK TRUCK: ON CERTAIN TRUCKS, THERE IS A LOSS OF SPEED (LOW) ASSIST. THE PUMP FLOW AND PRESSURE MUST BE TESTED BEFORE REPLACING TANDEM PUMP ASSEMBLY. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10043091","components":[{"id":"steering","name":"Steering","parent":null},{"id":"power-steering","name":"Power steering","parent":"steering"}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"GRANITE (GU)","year_from":2012,"year_to":2012,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"GU","year_from":2011,"year_to":2011,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"MRU","year_from":2011,"year_to":2012,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"PINNACLE (CHU)","year_from":2011,"year_to":2012,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"TD","year_from":2012,"year_to":2012,"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":[]}