Pretty sure the LCA is supposed to be replaced in its' entirety. But there IS a procedure for just the bushing.
Lower Arm Bushing
Special Tool(s) PIC Remover, Drive Pinion Bearing Cone
205-D002 (D79L-4621-A)
Removal
Remove the lower arm. For additional information, refer to Lower Arm in this section.
Index-mark the bushing-to-lower arm position for reference during the installation procedure.
NOTE: The Drive Pinion Bearing Cone Remover is used to secure the lower arm bushing while separating the bushing from the lower arm.
Using the Drive Pinion Bearing Cone Remover, a suitable press and adapters, remove the lower arm bushing.
PIC
Installation
NOTE: The Drive Pinion Bearing Cone Remover is used to clamp and hold the lower arm while installing the bushing.
Install the Drive Pinion Bearing Cone Remover onto the lower arm.
PIC
Transfer the index mark to the new lower arm bushing.
NOTE: The Drive Pinion Bearing Cone Remover is used to clamp and hold the lower arm while installing the bushing.
Align the index marks and using the Drive Pinion Bearing Cone Remover, a suitable press and adapters, install a new lower arm bushing.
PIC
Install the lower arm. For additional information, refer to Lower Arm in this section.