I serched the how to do section and there is nothing!

i have a 2007 2.2 cobalt, im putting cross drilled and slotted roters on it, and i cant seem to get the stock ones off.
what do i do? i removed the brake assembly and banged on the roter for like an hour!

please help me!
my buddy said his fell off

 

*Moved to Suspension, please post in the correct section*

 

i had to bang the **** out of mine

sometimes they come off like cake, sometimes they need to really be forced to come off. I had to take a big ass rubber mallet to get mine off.

 

^^^^^^^^^^ im with stoopit^^^^^^^^^^^

 

spay it with pb blaster and use a bigger hammer to beat that **** off