Steering Wheel Vibrate problems of the 2004 Nissan Quest

It is in the shop right now for issues with handling, the liftgate arm coming out of the door, abs, slip, traction lights are on all the time, cruise control is inoperable, rear wiper assembly has broken for the second time, front washer fluid is not working. Most notably are the issues with the liftgate and handling. We took the vehicle into the dealer several months ago for both issues. Our liftgate would never open on the first try. They checked into it and kept the vehicle for several days. We were given a rental and told they would pay for it and in the end they charged our credit card for it. They had a tech from Nissan fly out to look at it. They informed us that they were waiting on parts. We picked up the vehicle and never heard from them again. The other day I went out to open the door. It had pulled the molding loose and I could see metal shavings at the end of the strut. We have had it in with complaints about the handling before. We suspected that the rotors were to blame. Every time we brought this up we were told that wasn't the case. We were told to replace the brakes to solve the issue. We then replaced all four tires. Nothing has solved the problem. When driving on the highway the steering wheel shakes and the vehicle shudders when the brakes are applied. It has been doing this since approximately 15,000 miles. The ac blow hot if you sit for more than a few minutes with the engine running. If you rev the engine, it just blows hotter. You have to drive around for several minutes to get the ac to blow cold again. We are less than happy with Nissan's customer service. We have called them several times and emailed and have had no resolution on any complaint. We have been told by them that a rep will call us and it has never happened.

There is a vibration in the steering wheel of this vehicle, it is very noticeable when making a turn and the wheel is returning between the 11:00 and 1:00 position. Also when driving around town, speeds no more than 55 mph, the steering wheel will shake. Dealer has rotated and balanced tires, and match mounted. I went to goodyear and paid for them to do the same. The vibration still exist. I just picked the vehicle up from the dealer today,10/21/05, and the vibration is still there and I picked up the vehicle and the interior was full of grease, on the door and drivers side rug.