CHEVROLET MALIBU TIRE LOCKED UP

My Two Rear Tire Are Seized Up I Think, Ive Tried Rocking It Back And Forth With No Luck. Parked On A Hill Which Make It Harder

I Had To Park My 2002, Chevy, Malibu For A Day While I Went Out To Get A New Battery. While The Car Was Sitting The Front Passenger Tire...