Jeep Grand Cherokee 1999–2001 — technical service bulletin
Bulletin 0300302 · NHTSA communication 635670 · issued Aug 12, 2002
Technical service bulletin
communication type
Power Train
component
1999–2001
model years
3
vehicle entries
Official summary
Customer may complain of a high-pitched sound coming from the rear axle of the vehicle between 55 and 70 mph (88-112 kph). *tt
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.