Nothing, besides the day I bought it.
I went out to the lot, it fired right up from dead cold. Had a lengthy test drive, ran like a top.
Signed all the papers, took the keys and went to drive off the lot and... it wouldn't start!!!
Quick look-see by a mechanic yielded a verdict of "bad fuel pump". Major Bummer, had to wait until the next day to drive her home, but got a brand new fuel pump installed on the dealer's dime.
No problems since.
*As another reviewer remarked, the rear-end does make a brief, weird growling sound when accelerating hard from a dead stop. No big deal, doesn't seem to do any harm or affect anything. Sounds kinda cool!
It's a truck, but it handles almost like a sports car.
The 5 speed manual tranny shifts very sure & smooth and the clutch feels solid as a rock.
The 3.0L V6 engine makes this thing Move. Very quick and sporty, strong acceleration in all gears.
4 wheel Anti-Lock Brakes feel very solid.
Very Quiet interior and a surprisingly good stock sound system.
I wish it had a tilt steering wheel, I have short legs (5'8") so I have the seat set pretty far forward which means I kinda have to squeeze my legs under the steering wheel getting in and out. Otherwise pretty roomy and the seats do slide and tilt way back even with the regular cab.
My next truck will be a ranger.