Cadillac Repair: 99 cadillac overheating, cadillac seville, bolt holes

Question
99 cadillac seville overheating. Overheated, cadillac dealer said it needed a new radiator. Put in new radiator, radiator guy said their were gases in the coolant so I need to replace head gasket. If I replace headgasket, have there been reports in this car or reoccurrences or it not still solving the whole problem. Its also burning through oil. 2 mechanics said its not the headgasket what else could it be?

Answer
it is the head gaskets and you have to drill out all the head bolt holes in the engine block and install steel heli-coils in each head bolt hole and replace the head gaskets and install all NEW head bolts.

This is a major problem with Cadillac engines and is very very common.