Tail Light Switch problems of the 2006 Chevrolet Equinox

I have a 2006 Equinox that I bought used with 91,000 miles on it. Only one previous owner with clean car fax. I love the car, but at least once a week it acts like it doesn't want to crank. I sometimes have to push the gas pedal to even get it to crank. I'm assuming this a fuel pressure problem of some sort. Also, once cranked the car will sometimes idle itself down from 1 rpm to 0 rpm then back to 1 rpm. There is also a clunking noise coming from back end of car where the fuel pump is. I have also had issues with having the headlights replaced because water gets into the headlights. Most of the Equinox's that I see on the road have water in the headlights. This a safety hazard because the headlight bulbs will burst when wet and you have no headlight until you have it fixed. (which you have to replace the headlights/tail lights yourself because part stores refuse to do the labor for you because you have to remove the entire headlight to even replace a bulb. This seems to me that Chevrolet did that so if you are a woman, like myself, you are forced to take it somewhere and have it replaced. ) there are also issues with the brakes and rotors wearing too fast. I have also had issues with the air conditioner. I have had to replace the resistor on the blower motor twice in 2 years. These may not be big problems to gm, but I rely on my car to take me to work and school and the fact that they genuinely don't care has forced me to not want to buy another Chevrolet again. Seeing as they had to have a government bail out previously to even stay in business, you would think that they would value their customers!.