Guys, I have a serious question regarding the GM Major Guard Coverage. I just recently purchase a brand new 08 Chevy Silverado Crew Cab with only 12 miles. I agreed to the extended warranty "GMPP" plan at an $$ extra cost of course. As you all know, all new GM vehicles come with the 5 year/ 100,000 mile warranty with all new purchases. Is anyone out there actually still purchasing the extended warranty? If so what are your reasons? I just want to make sure this was a wise decision on my part.