GM 6.2 Liter
I'm considering ordering a new GMC Sierra 1500 with the max tow package. It would be a crew cab short box SLT trim. I can either get the 5.3 or the 6.2 liter. Both have the 8 speed transmission. I...
Forum Discussion
when we had our 2008 Yukon XL Denali with the 6.2, mpg was better with premium, enough that it was less cost to use premium. I never heard a knock on either. The acceleration was just plain awesome.... as my wife said, it had whoomba where the 5.3 does not...
