|TECHNICAL SERVICE BULLETIN
3.5/3.7L – Lack Of Heat Or Uneven Heat From Front Vents
18 June 2018
Issue: Some 2015-2018 Transit vehicles equipped with a 3.5L or 3.7L engine may exhibit a lack of heat or uneven heat from side to side. This condition may be due to deposits from the engine coolant trapped in the heater core.