My 2001 Blazer has been leaking oil for a while...I was told by the oil/lube tech that it was due to a leak in one or more valve covers. How big of a job is this, and how much $$ would I be looking at to fix it?

 

It is not too terrible of a job and can be done for the cost of the gaskets (under $20) if you do it yourself. It is a bit of a challenge to get everything out of the way to get the valve covers off. But that is really all there is to it. There are a few wiring harnesses that need to be disconnected and moved out of the way is all.