Replacing that lock cylinder is very easy. Only tricky part is removing the lock plate retaining ring if you do not have a holding tool for it. Places like AutoZone usually have tools they loan for free if you buy the part there. Once the wheel is off you remove the lock ring & the hazard flasher button. Now loosen the turn signal switch and lift up & out of the way. Now you can remove the lock cylinder holding screw and pull out the lock cylinder.