2006 Chevrolet Cavalier loose ground wire?

Ok. Being that the ar is a 1996, there is going to be some problems, so you need to have a mechanic to check it BEFORE you make the purchase!

The flickeing lights could be caused by an alternator/charging system problem, a loose ground (unlikely - because to fix a loose ground you only have to clean it and tighten it up), a loose belt (caused by a faulty belt tensioner).

There cars often leak fuel at the base of the injectors (bad injector seal about $1 for the part). Check for oil leaks (rear & front crankshaft seals, valve cover). Listen for hub bearing noise as you drive around 20 - 45 mph.

There is always a long list of things to check when buying a car, but these are some of the most important, as far as usual problems that these cars have.