Honda mechanic showed me that the grease seal on the upper control arm is bad. He said if I don't replace it soon i will have to replace tge whole upper control arm. How hard is it to replace the upper control arm grease seal.
Thanks

 

I'll assume the seal is the boot on the ball joint. Fairly easy, serach as I think this same question was asked a few weeks ago.

Not sure of skills or tools you have, don't take that the wrong way. If the ball joint(s) has never been replaced, might want to go ahead and replace the whole arm.

Simple version-once the tire is off you're looking at one cotter pin and three nuts...again, simple version.