Who has had to have the wiring replaced for the rear window defrost?

What is your question?

Rear defrost did not work. Replaced the fuse, but this didnt fix the problem. Brought it to a Chevrolet dealer shop and they had to replace some wiring to fix it. Since then, (1 year ago), the battery light has come on the dashboard 4 times. Have replaced battery, alternator, and most recently the generator and transmission cooling valve, and the evap valve. This cost me over $1000! Has anybody experienced any of these related issues and what have you done to fix it?