A sticky brake caliper could do that.
The hub bearings in a 1998 Z71 can not be repacked. The bearings are part of the hub, and the hub assembly will have to be replaced.
No. That is a factory sealed bearing.
http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c1528008f53e
chevy cobalt torque specfront hub
The grinding could be coming from the rear brakes.
yes you can but good luck finding one
put chain around the small hub, take something heavy and snatch or a quick jerk on the axle.
remove wheel and brake caliper,break rotor loose from hub with rubber mallet by hitting outward
NO you can not. There's no way to install them, Because of the way the front axel comes through the front hub. NOT POSSIBLE.
Instructions on how to change the rear hub wheel bearings on a 1996 Chevy cavalier
how to change rear hub on 2006 chevy cobalt 2.2l
36mm. You will also need an 18 mm box wrench to replace the bearing assembly.