Have a 2005 4.7L Quadra-trac II - 69K
Was in my buddies driveway, dry pavement, on an incline and engaged the vehicle into 4LO. When I tried to return the vehicle to 4HI it would return. Using the correct shift procedure, putting the vehicle in neutral (while running) pull the 4 wheel drive switch. It says to service the 4WD system. I looked at it and said no &&*$%!@* $#!*
Just put on new tires within the last two weeks that are a larger size (265/70/17). I did have TPMS in the stock wheels, but the MOABs have them but are not linked. I really doubt that this would affect the 4WD system but at this point I must consider anything.
So could this be a binding issue and I need to put the vehicle up on jack stands and attempt to engage the 4LO?