front wheel bearings 03trailblazer

Are front wheel bearings a job someone can tackle or what is an average cost to have done professionally?
I have 4wd extended with straight six.

Could anyone give me a step by step directions?

I have yet to do a GMT360 chassis front WB, but basic tools, some time & basic know-how will get the job done. Typical dealer charge would be about $500/side. An independant shop with aftermarket parts about half of that. Yourself with AM parts? Probably about $100 and a few hours.

Joel