Just be sure that all recalls were done such as the headlamps, timing chain/oil monitor set back etc. Other problems I have had were drive shaft hitting tunnel [AWD] which was not noticeable unless car was floored, rear deck rattle on passenger side both fixed under warranty. I am not an extended warranty person but that is personal decision. Problems like the timing chain received a 100K warranty after discovered by GM. There will, however, always be someone who ended up being very happy with extended warranty. After all it is basically an insurance policy.