You’ll know the rear spring shackles are due for replacement when there’s noticeable play in the suspension or a knocking noise from the back of the vehicle, especially over bumps.

Rust around the shackle plates or worn, oval-shaped bolt holes are also clear signs of wear. If the vehicle sits unevenly, squeaks when the springs move, or shows signs of binding, the shackles may no longer be working as they should.

Replacing them restores proper movement of the leaf springs and keeps the rear suspension operating smoothly.