Jeep Grand Cherokee 2014 — technical service bulletin
Bulletin 09-006-15 · NHTSA communication 10149684 · issued Jul 18, 2015
Technical service bulletin
communication type
Engine and Engine Cooling
component
2014
model years
2
vehicle entries
Official summary
Intermittent Engine Shudder While Driving This bulletin involves replacing the engine cylinder heads. A small number of customers may experience a slight engine shudder while driving. They may state that the condition feels and sounds like driving over rumble strips. It may also be perceived as an internal transmission issue or engine misfire. No Diagnostic Trouble Codes (DTCs) will set as a result of this condition. DISCUSSION: The root cause of the engine shudder has been found to be due to excess carbon build-up on the exhaust valve stems and will typically happen on vehicles driven mostly
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.