CAUTION: After removing the steering knuckle from the ball joint stud, do not pull outward on the knuckle. Pulling the steering knuckle outward at this point can separate the inner C/V joint on the driveshaft.
NOTE: Use caution when separating the ball joint stud from the steering knuckle, so the ball joint seal does not get cut.
I have to replace both sides, I have the parts but I am not sure it isn't more work than I want to take on. Generally how much does the garage charge to replace.