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Service bulletin 4648

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 id615185
Published by NHTSA2001-01-03
Manufacturer's number4648
Manufacturer's date1998-08-01
NHTSA componentSUSPENSION

NHTSA's summary

SOME 4X4 TRUCKS WITH 137 INCH AND 142 INCH WHEELBASES MAY EXHIBIT A NOISE / VIBRATION, ON DECEL, BETWEEN 60 - 30 MPH. *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

Suspension

Vehicles listed
FORD F-250 SD1999 (the catalog's model; the bulletin names a series or trim of it)
FORD F-350 SD1999 (the catalog's model; the bulletin names a series or trim of it)

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
042362005-04-18. Service bulletin. VEHICLE LEAN SAG WHEN OBSERVED FROM REAR OF VEHICLE. *EH
151572001-11-07. Service bulletin. SOME VEHICLES MAY EXHIBIT REPEAT NOISE CONCERNS WITH THE FRONT STABILITY BAR END LINKS. *YH
122932001-01-18. Service bulletin. SOME 4X2 AND 4X4 TRUCKS MAY EXHIBIT WHEEL ALIGNMENT CONCERNS INCLUDING DRIFT / PULL RIGHT OR LEFT, TIRE WEAR, SHIMMY AFTER HITTING SMALL BUMPS AND / OR STEERING IS INCLINED TO FOLLOW GROOVES IN THE PAVEMENT. *TT
53802001-01-16. Service bulletin. SOME 4X2 AND 4X4 TRUCKS MAY EXHIBIT WHEEL ALIGNMENT CONCERNS INCLUDING DRIFT / PULL RIGHT OR LEFT, TIRE WEAR, SHIMMY AFTER HITTING SMALL BUMPS AND / OR STEERING IS INCLINED TO FOLLOW GROOVES IN THE PAVEMENT. *TT
53792001-01-16. Service bulletin. SOME VEHICLES MAY EXHIBIT A NOISE FROM THE FRONT LEAF SPRINGS. *TT
117652001-01-10. Service bulletin. SOME VEHICLES WITH 137 INCH AND 142 INCH WHEELBASES MAY EXHIBIT A NOISE / VIBRATION, ON DECEL, BETWEEN 60 - 30 MPH. *TT
128822000-11-20. Service bulletin. SUBJECT REGARDING THE AVAILABILITY OF REAR SPRING CLIP KITS FOR VEHICLES EXHIBITING REAR SPRING RATTLE. *TT
128792000-11-20. Service bulletin. SUBJECT REGARDING REAR SPRING CLIP KITS FOR VEHICLES EXHIBITING A REAR SPRING RATTLE. *TT
64892000-11-17. Service bulletin. SOME VEHICLES BUILT WITH 3-LEAF OR 4-LEAF REAR SPRINGS MAY EXHIBIT A REAR SPRING RATTLE. *TT
131482000-11-17. Service bulletin. SOME VEHICLES MAY EXHIBIT A FRONT SUSPENSION SQUEAKING NOISE. *TT