The only true way to know if a bolt is meant to be replaced after being removed is to use the service manual. But replacing all bolts bolts that are torqued and then turned an extra amount of degrees is good practice(expensive but good ) A more conservative way to determine if a bolt should be replaced is to add the element of heat when thinking about replacing the bolt. If a bolt is torque+angle tightened AND it is subject to extreme heat cycles: replace it. Sooo.....some examples: Cobalt flywheel bolts get toque+angle, and they hold the flywheel which gets hot, to the crank, which gets hot, so replace them. The cradle bolts get torqued+angled, but they bolt the cradle which doesnt get hot to the body which doesnt get hot, so DO NOT replace them. The Cobalt lower ball joint pinch bolt gets torqued+angled, and it holds the knuckle which can get pretty warm, to the control arm which doesnt get hot, so we dont replace them.

There are some exceptions to the rule(not on the Cobalt though really) but for the most part if you go "torq+angle+gets too hot to touch" you wont go wrong.

Ill post up some quick reference lists in the specific areas on which important fasteners are one time use, but when in doubt use my method. If it gets torqued, and angled, and gets too hot to touch it gets replaced.