Problems with 2005 Chevrolet Malibu EXTERIOR LIGHTING

As of this date, feb. 17, 2009, the part in question has not failed, causing any crashes or injuries. shortly after i purchased the vehicle, i noticed a thumping whenever the steering wheel was turned sharply to the right or to the left. while under manufacturer's warranty, i had it checked out at least 3 times, and each time the dealership service department assured me there was no recall on the part, the boot of joint somehow connected to the steering. since that time, i have had my personal mechanic check out the problem and he has diligently checked for a recall or a corrective measure from chevrolet, but there has been none. the mechanic has greased this joint several times, and it helps the thumping, but eventually it returns over time. i have read where others have experienced their steering totally going out because of this issue. i am afraid for my family's safety due to this problem that chevrolet has constantly refused to address. component #2: i was constantly having to replace the front turn signals as the bulbs were constantly burning out. component #3 the fan which controls the inside air flow has constantly rattled unless the fan is turned on the highest setting. the dealership even replaced that fan, telling me a broken part had fallen down into it. i returned the car to the dealership at least 3 times, but they finally said they could not find anything else. it still rattles horribly. *tr