general problems of the 2004 Chevrolet Impala

The traction control turns on frequently. This causes the car to make a grinding noise. When braking the car makes a grinding noise and car is not stopping it feels like it's locking up and sliding. In a sudden stop needing to be made is at great risk of a accident. I have replaced a elbow shaped part that has busted open twice. Car is constantly over heating the radiator cap has a rustic clay like substance. It won't hold antifreeze, I don't see a leak but it needs refilled quite often. The engine smokes, the cars rpm's will flex up and down and the car will just cut off. I'm wondering if the rustic clay like substance has gone through my engine and is causing me many problems with it. I have found reports of lawsuits in past regarding dexicool in gm cars doing this and ruining the engine. The problems in the reports are just like mine and many others on here. Help!!'.

When I give it a little gas to go usually just when im first taking off the traction control kicks in but if I let off the gas it kicksback off. Then again, go a few blocks and hit the brakes and the antilock brakes kick in some times it turns off the traction control and abs it seem like this is a problem with a large number of Impalas and every one is shelling out a lot of money and still have the problem I don't have that kind of money can you tell me what is wrong or should I trade it in for a Ford I am 46 and have always been faithful to chevy but if im stuck with a factory defect Ford here I come.