Im looking for a little help with my 04 LLY. it is 100% stock..and im not sure if im having a power loss issue. Unless it is rainy it WILL NOT spin the tires! Not even if i brake stand it! i have 285/65's on stock wheels which does give me better traction, and i do plan on modding the truck when i have the $$, but i want to make sure the truck is strong to start before modding? anyone have some helpfull input?