The tilt shoe spring is broken.

Inspect tilt shoe spring, replace as necessary. Refer to Tilt Spring - Disassemble - Off Vehicle and Tilt Spring - Assemble - Off Vehicle .

The tilt shoe is seized on the pivot.

Inspect tilt shoe, repair as necessary. Refer to Steering Column Tilt Head Housing - Disassemble - Off Vehicle and Steering Column Tilt Head Housing - Assemble - Off Vehicle .

Dirt or debris is in the tilt shoe groves.

Inspect and clean debris from tilt shoe groves. Refer to Steering Column Tilt Head Housing - Disassemble - Off Vehicle and Steering Column Tilt Head Housing - Assemble - Off Vehicle .