TexasCHLforum.com

I purchased extended warranty coverage for both my Sierra and my wife's Acadia. Our dealer had a plan for both that would set us back $3400.
We opted to not purchase these plans. I instead shopped coverage and cost from dealers as well as third party providers.
We wound up purchasing a factory GMPP Major plan for both at a cost of $1903 from Smith Chevrolet in Indiana. Best price, although an Georgia dealer was close, good service, and our warranty info is on every GM service computer in the country.(With some third party plans contact and negotiations fall to the car owner)
Timing is important for pricing and coverage. GM views a vehicle as new for it's first year of life as long as mileage is below 10k(verify it may have changed in the last 4 years)so you can purchase , for example, a 6 year/70k mile New car plan, at New car pricing that will cover your vehicles until they are near 7 years old and approaching 80k miles. If you buy a plan when you buy the car you get 6/70.