TSB110181 – Engine Speed Instability Related to Truck Vacuum Blower or Pump Engagement
NHTSA ID Number: 10162091 Manufacturer Communication Number: TSB110181-052420 Summary This Technical Service Bulletin describes the verification and resolution of engine speed instability related to truck vacuum blower or pump engagement. Some units with transfer cases have exhibited engine speed instability when the vacuum blower or pump is engaged. New engine control module software can address most of … Read more