The lock bolt is damaged.

Replace the lock bolt. Refer to Steering Column Tilt Head Housing - Disassemble - Off Vehicle or Steering Column Tilt Head Housing - Assemble - Off Vehicle .

The lock cylinder is faulty.

Replace or repair the lock cylinder. Refer to Ignition Lock Cylinder Replacement - On Vehicle .

The housing is damaged.

Replace the housing. Refer to Steering Column Replacement .

The lock module gear train is jammed.

Replace the lock module. Refer to Electronic Column Lock Module - Disassemble - Off Vehicle or Electronic Column Lock Module - Assemble - Off Vehicle .