Originally Posted by
Fivefingerdeathpunch
The GXP's dont really eat transmissions, it just can be a common issue. Mainly its the heat, the LS4 block seems to superheat the trans because it and trans case itself are both aluminum. The fluid life is cut in half almost. Thus a trans cooler is pretty much a must on them. If you don't beat the piss out of it all the time and just do some "fun" driving now and then it will be fine.
Some people get problems, some dont.
Your 04 Comp G trans is one of the best out there, but are the most rare too, if you were trying to find a used replacement.
Both have there problems and most are the same.
I bet the dealership wont give you anything for your car if you traded it in as is. Fixing the radiator and front hubs and selling it yourself would get you more money.