Hello fellow dis-gruntled GM owners! I live in Alaska and I have strictly owned 7 Gm trucks since 1982.My 08 1500 sierra required the lifters to be changed @ only 47000 miles (2 months after warranty on engine expired).Out of pocket cost to me was $3200! After 800 miles of driving, a loud knock and low oil pressure couple with check engine light reared its ugly head. Short story,after lots of run around by GM....I will be replacing engine with a used one at my expense AGAIN! No relief from GM! My remedy? Fix it,sell it.Seems like GM could have done more for a life-long customer like me?? Also, I purchased a 2013 Ford XLT, which is significant given the fact that GM is now Ford`s biggest future asset! Bottom line....GM has a serious problem with 5.3 liter engine and should stand behind their life long customers! Good luck to the rest of you, I like my new FORD!!!