is it easy taking off the rear bumper? wanna clean out the dirt in rear crash bar and rust proof it with rust paint and rocker guard.

 

Gotta pull the black plastic bit in the trunk, tail lamps, license plate lamp, and rear wheel liners(or least peel back the liners).

After that there's 10 bolts for coupe or 14 bolts for sedan holding the rear bumper on.

 

Where are the bolts located

 

Post #2 has some good pictures.
https://www.cobaltss.net/forums/how-...5/#post2451675