Jeep Grand Cherokee 1999 — technical service bulletin
Bulletin 181499 · NHTSA communication 606166 · issued Jun 18, 1999
Technical service bulletin
communication type
Engine and Engine Cooling
component
1999
model years
1
vehicle entries
Official summary
The vehicle driver may experience a drone like noise during warm engine idling. *tt
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.