wtf is the drag feeling
 

ok so truck always feels like its dragging i seen a few post to look at breaks ?? so im like its not breaks and this morning i got to take off and truck just didnt want to go so i have to pull tires off tomorrow
so my question if its not the wheels what can make it feel like its dragging
tranny feels sound no slipping and changing gears
transfer case ???
hubs ??
rear end ??

Possibly not getting enough fuel.

ok so i looked at wheels and breaks dont seem to be dragging but idk didnt pull the tires off
i am worried thats its the rear end or transfer case
there was a lot of slop in the rear end but idk