Changing an Alternator on any car is pretty much the same, find the serpentine belt, look for an alternator, once you see it, release the belt using the tensioner then remove the belt, undo a few bolts, remove it, add the new one in then replace the belt and your good to go.
Google 'Cobalt alternator' to see what it looks like.
Old Car: Chevy Cobalt 2006 LS Sedan base (Automatic)
New Car: Chevy Impala 2011 LT Fully Loaded (Automatic)
Every minute spent angry is a happy minute lost for ever and ever!!!
Drives 2016 Cocoa Buick Encore 1.4L Turbo auto KL4CJDSB2GB652675
Drives 2016 Sunset Orange Trax LT1 1.4L Turbo auto 3GNCJPSB8GL142716
Never drive faster than your guardian angel can fly