Fog Light Switch problems of the 2002 Chevrolet Avalanche

I took my 02 Avalanche in for warranty service work for serveral items. One item was not fixed to my satisfaction. I reported condensation in my daytime running lights/fog light housing. Not only was there condensation, there was standing water. When I picked up my vehicle I looked and the lights seemed to be ok, but by the time I arrived home 15 minutes later, there was condensation in them again. I called the dealer to find out that they didn't replace them, they only "cleaned them out and resealed them". Upon further inspection I noticed that they separated the housing from the lens and then used silicone sealant to put them back together. The dealership I took it to stated there was a bulletin from gm stating that some condensation is normal and the fix they performed was all they were allowed to do. I contacted gm and received the same information. I took the vehicle back in again for the condensation, they have now performed the same fix. I told them and the gm rep on the phone that this was a safety issue, that no amount of condensation in my light housing is acceptable. Now I am unwilling to use my fog lights due to the fact I am concerned about possible safety issues with the lens and the condensation as well as the now silicone being so close to the heat of the fog lights. Gm is refusing to replace my light housings, I consider this a serious safety issue.