WenmarOpen by Wenmar Pro

Service bulletin 6408

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 id606833
Published by NHTSA1999-09-03
Manufacturer's number6408
Manufacturer's date1999-06-01
NHTSA componentPOWER TRAIN:AXLE ASSEMBLY

NHTSA's summary

SOME VEHICLES WITH 4X4 OPTION WHILE OPERATING IN 4X2 MODE MAY EXHIBIT A LIGHT OR A ROLLING THUMP / BUMP SENSATION ON SLIGHT TO MODERATE ACCELERATION AND DECELERATION. *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, Axle

Vehicles listed
FORD RANGER1998, 1999

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
0305082005-12-07. Service bulletin. FRONT AXLE LEAKS FLUID FROM VENT TUBE - VEHICLES EQUIPPED WITH 4X4 OR AWD. *TT
03582003-07-26. Service bulletin. FLUID MAY LEAK OUT OF THE FRONT AXLE VENT TUBE. *TT *JB
02422002-11-04. Service bulletin. CERTAIN VEHICLES WITH 4X4 OR ALL-WHEEL DRIVE MAY HAVE A FLUID LEAK FROM THE FRONT AXLE VENT TUBE. *TT
148472001-05-23. Service bulletin. CONCERNS WITH VEHICLES EXHBIT FLUID LEAKAGE FROM THE FRONT AXLE VENT TUBE. *TT
01862001-05-22. Service bulletin. ON SOME VEHICLES, INCLUDING SPORT AND SPORT TRAC, THE FRONT AXLE LEAKS FLUID FROM THE VENT TUBE. *TT
001512001-04-17. Service bulletin. VEHICLES MAY EXPERIENCE VIBRATION FELT AT HIGH SPEEDS WHICH MAY CAUSE THE TRANSMISSION EXTENSION HOUSING SEAL TO LEAK OR THE TRANSMISSION EXTENSION HOUSING BLUSHING TO MOVE OUT OF POSITION OR BECOME DAMAGED ON SOME VEHICLES. *JB
002422001-03-02. Service bulletin. ON SOME VEHICLES THERE MAY BE A VIBRATION AT HIGH SPEEDS WHICH MAY CAUSE THE TRANSMISSION EXTENSION HOUSING SEAL TO LEAK OR THE TRANSMISSION EXTENSION HOUSING BUSHING TO MOVE OUT OF POSITION OR BECOME DAMAGED. *TT
125212000-11-14. Service bulletin. VEHICLES WITH LIMITED SLIP / TRACTION-LOK REAR AXLES MAY EXHIBIT A CHATTER NOISE WHILE TURNING. *TT
60322000-11-14. Service bulletin. SOME VEHICLES MAY EXHIBIT A HIGH PITCHED SQUEAL OR WHISTLE TYPE NOISE FROM THE FRONT END AT SPEEDS FROM 10 MPH TO 40 MPH. *TT
128432000-11-08. Service bulletin. SOME 4X4 VEHICLES MAY EXHIBIT A HIGH PITCHED SQUEAL OR WHISTLE TYPE NOISE FROM THE FRONT END AT SPEEDS FROM 10 MPH TO 40 MPH. *TT