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Service bulletin 15897

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id637779
Published by NHTSA2002-12-06
Manufacturer's number15897
Manufacturer's date2002-05-01
NHTSA componentPOWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT

NHTSA's summary

SUBJECT REGARDING DRIVELINE ANGLE-RELATED VIBRATION AT VARIOUS SPEEDS AND LOAD CONDITIONS. *TT

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Transmission and driveline, Differential

Vehicles listed
FORD EXPEDITION1997, 1998, 1999, 2000, 2001, 2002
LINCOLN NAVIGATOR1998, 1999, 2000, 2001, 2002

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
153192002-04-15. Service bulletin. SOME VEHICLES BUILT BEFORE JUNE 8, 2000 AND EQUIPPED WITH A4WD MAY EXHIBIT A HIGH-SPEED MOAN OR DRIVELINE PULSATION/SHUDDER. *TT
127572000-11-03. Service bulletin. SOME VEHICLES BUILT AFTER 2/1/1999 EQUIPPED WITH 5.4L-2V ENGINES AND 4R100 TRANSMISSIONS MAY EXHIBIT A DRIVELINE CLUNK / JERK DURING TIP-IN FROM CLOSED THROTTLE AT VEHICLE SPEEDS ABOVE 43 MPH IN 4TH GEAR GEAR AND NORMAL TRANSMISSION OPERATING TEMPERATURES. *TT
991431999-11-24. Service bulletin. SOME 4X4 VEHICLES BUILT WITH CENTER DISCONNECT FRONT AXLES MAY EXHIBIT A MOANING NOISE FROM THE FRONT DIFFERENTIAL WHILE OPERATING IN 4X2 MODE. *TT
9961391999-09-09. Service bulletin. CONCERNS WITH FRONT DIFFERENTIAL NOISE. *TT
9961131999-09-09. Service bulletin. EXPERIENCING FRONT DIFFERENTIAL NOISE. *TT
63041999-09-02. Service bulletin. SOME VEHICLES MAY EXPERIENCE A DRIVELINE CLUNK / JERK DURING TIP-IN. *TT