Affected Component: EQUIPMENT ADAPTIVE/MOBILITY

Date Published
NOV 19, 2021
NHTSA TSB #
10203655
TSB Document
Summary
Some 2015-2019 Transit vehicles equipped with a 3.7L engine and block heater may exhibit a repeat coolant leak from a deteriorated O-ring and/or intake manifold thermostat housing. This may be due to the block heater in the thermostat housing. To correct the condition, install a block heater service kit in the engine block.