My wifes GA did but that was because they use plastic lines/tanks on the core and so they eventually crack. The GP's arent this way, all metal. My problem is that my heater core was taken out by the Dex Cool mess I went through and Ive just never replaced it. But now that the wife is driving it more, shes putting the bug in my ear to fix it. so I guess Im going to have to get that done. I just hate to drop $100 on a friggin heater core.