In areas where temperatures reach 12F(-24C) or below for an extended amount of time, installation of a thermal protective cover (P/N 68564806AA) on the DEF injectors
Body Type: Cab & Chassis - Crew Cab; with 52 Gallon Tank; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty OR Body Type: Cab & Chassis - Conventional; with 52 Gallon Tank; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty
Body Type: Cab & Chassis - Crew Cab; with 20 Gallon Tank; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty OR Body Type: Cab & Chassis - Conventional; with 20 Gallon Tank; Failure To Replace The Fuel Tank Lock Ring And Seal Will Void Warranty