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June 1, 1999 Service bulletin

Some vehicles built with 3-LEAF or 4-LEAF rear springs may exhibit a rear spring rattle

Ford technical service bulletin 6489 for 1997-1999 Ford F-150 and 1997-1999 Ford F-250.

Bulletin number
6489
Component
Suspension: rear: springs: leaf spring assembly
Summary
Some vehicles built with 3-leaf or 4-leaf rear springs may exhibit a rear spring rattle. Tt

Owners of these vehicles have filed 450 complaints in the suspension category.

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