Engine Cooling System problems of the 2000 Cadillac Catera

I would drive the Catera right on the main busy road my car made a suicidal stop! I panic! immediately put the emergency hazardous lights on. I took it to the mechanic and he said he is reading the sensor are bad, so I spent over $300. 00 dollars replacing them, I continue to have the car stop in the middle of the road, I have been very lucky that I have not been hit or in a serious accident. Again I took the car to the mechanic a different person this time. He said; it was the manifold intake, they are plastic and they crack or bend when the car engine heats, the mechanic and I looked for different junkyards to our surprise most of the Cadillac of that made the very piece we were looking for was missing. (plastic air take and the hose) it does not take a rock scientist to know that there is a serious problem with putting a plastic intake inside a engine that holds a lot of heat. Specially for me I live in a year around hot weather. I went to different auto part stores to find the part because the junkyard was out of the question what I did find all the auto parts store had nothing good to say about this car. It has a bad reputation this beautiful dream Cadillac caterea is the bad apples of the Cadillac, it is ashamed you don't have a recall on these cars. It looks like it cheaper to stop making them than to fix the problem. The problem I see they are still out in the street. Unfortunately I have one. I called gm and they would not help me because I did not buy the car from them or have I repaired the car with them. But is thier car model. Don't get it. They gave birth to defective cars now they want us to fix the problem.

Radiator, oil leaks, transmission, tires. . All bad. . . Worst car maker in this world (Cadillac) all parts have had to been repaired and replaced.