Navistar, Inc. (Navistar) is recalling certain model year 2011-2015 International DuraStar, ProStar, TranStar and WorkStar, 2012-2015 International TerraStar, 2013-2015 International LoneStar and IC Bus HC, and 2014-2015 IC Bus AC vehicles. A vehicle double battery jump start or electrical load dump event could result in an overvoltage condition of a component within the HVAC system linear power module (LPM) which is used to control the blower speed. The overvoltage condition could result in the overheating and failure of the LPM.
If the LPM overheats and fails, there is an increased risk of a fire.
Navistar will notify owners, and dealers will replace the LPM with an upgraded one, free of charge. An interim letter was mailed to owners on June 18, 2015. A second notification will mailed when parts become available. The recall began on August 6, 2015. Owners may contact Navistar customer service at 1-800-448-7825. Navistar's number for this recall is 15509.
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.