Simply, it began with needing an oil change. Easy enough. On the way to the
shop, the "service engine soon" light came on...  The knock sensor is
bad.... The next day, the intake is leaking coolant... The 3rd day, tie
rods are bad (i already knew it was on its way)... The 4th day, sent wrong
tie rods (Monday morning the right ones will be here)... The 7th day, tie
rods are wrong twice!! 8th day, Nissan overnights tie rods... WRONG ONES.
9th day, Nissan says mine is not part of a "tie rod recall" (which I can
find no record of).  Mid-9th day, it IS part of the recall.  10th day,
recall tie rod assembly IS WRONG!! All of these tie rods do not fit the
truck.  Now some wax ring, I don't know what the heck it is, is bad...
it's leaking coolant.
Evidently, the leak has been so slight, coolant never hit the ground, only
left its rusty mark.

Existing problem since date of purchase - while breaking, the truck
shakes/bounces, sometimes a bit, sometimes a lot... Nissan says, "it's
fine." Every shop says its fine.  It's having trouble holding a wheel
balance as well.

I just dumped a bunch of money on tires/wheels and a lift! And I don't
know the last time I drove it.  Does anyone PLEASE, PLEASE have any
advice???
I'm confident on the mechanic, I've known him for over 5 years, he works
on all my vehicles.  
Any help would be great!