No, you don't need to buy an extended warranty from GM. But, if you are going to get an extended warranty, then only get the GM factory warranty. I'd recommend the 7yr, 100,000 mile warranty, because if you decide to sell the vehicle before seven years/100,000 are up, the buyer can also use it. It also makes the vehicle easier to sell. If you trade in though, then just get a 7yr/70,000 mile warranty.
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