2006 Chevrolet Uplander steering problems

I was hit from behind on february 4, 2012 on campcreek pkwy in college park ga, because my vehicle stalled when I pressed the gas to take off from the red light, it clunks when making turns, it sounds as if something is loose on the front end, and has made these sounds since I've had it, I have had to repair the brakes frequently, the vehicle stalls when driving on the highway, the temperature gauge goes up and down, the transmission stalls.

I have a 2006 chevy uplander lt and I started to have problems around 3,000 miles of ownership. It started with electrical issues (hard drive entertainment system, gas gauge, dimming lights, radio losing settings, hard starts, service ABS, and service traction control) and gradually moved to mechanical issues (clucking noises ? Front end, vibrations ? Front end, steering binding, and grinding noises from the front end).