paint peels cuz` of one prob`:
poor prep job!!!
ya it sounds like it was repainted...factory paint does not just flake any more
gm paint jobs are just fine
there is no "coating" to protect paint from flakin or chippin, preping the panel right will make the paint last
knowing the paint system also helps mixin any product wrong will give poor results
a paint job when measured with a paint mic should measure out to 2 to 3 mill`s thick
no more no less
painting is a art form and you have to know what you are doin
or what is haping to ur car is the result