Jeep Grand Cherokee 2014–2017 — technical service bulletin
Bulletin 9003633 · NHTSA communication 10121828 · issued Nov 16, 2016
Technical service bulletin
communication type
Engine and Engine Cooling
component
2014–2017
model years
8
vehicle entries
Official summary
Water Pump Dealers are replacing water pumps because of a coolant leak. Water pumps are found TNF but the water pump bypass o-ring was pinched resulting in a coolant leak that looks like a failed pump. Please inspect the bypass o-ring before replacing the pump as it is available separate for service.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.