Affected Component: ENGINE AND ENGINE COOLING

Date Published
MAR 02, 2020
NHTSA TSB #
10172935
TSB Document
Summary
Some 2015-2019 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 becoming trapped in the heater core. To correct the condition, flush the cooling system and replace the heater core.