My chevy aveo has a ticking nise after changing the valve cover gasket

SOURCE: how to replace valve cover gasket 1998 chevy malibu

The first step is to remove all the parts that are in the way of you being able to remove the valve covers. (Ex.: air intake, loose wires etc.) Then you will need to remove your valve covers (using basic tools) and be very careful to not let anything get on your lifters, which your valve covers protect. Once you have the valve covers off compare the new gaskets to make sure they are the right size. Then remove the old gasket and replace with the new one using a high temp gasket sealant (available at any auto parts store) to attach the gasket to the valve covers. Then tighten down snug and check for leaks after replaced. 

SOURCE: how to change valve cover gasket 2005 aveo

take off the cover screws and cover. take off the valve cover bolts and remove the valve cover.

SOURCE: how to fix head gasket on 2005 chevy aveo

digram at autozone.com

SOURCE: Hi, I have a 2006 chevy aveo and I was recently

Its easy. I did mine about a month ago. You need to take off all the bolts on the top part of the motor. there are some tubes on the left side of the motor by pushing them out of the way... you take the old one off and replace it with the new one making sure its aligned and the you put it back on.. the bolts need to be hand tightened kinda as tight as you would do your tires.