While current truck has been mechanically rock solid I've had a bunch of no excuse for it's age issues. One headlight filling up with water, both tail lights fogging up (headlight plus one taillight replaced, been fine until second tail has started to fog on odd rainy day). Chrome bubbled on the grill (just replaced) Covers on both dash power points fell off, door on the console let go as well (after replacing, both power point doors fell off second time, console has been fine). Had to replace fuel pump module and fuel level sensor to correct gas gauge randomly quitting (well ahead of when it would have been due for fuel pump / issue is super common). Paint is just starting to peel on both inner edges of the rear fender wells (also common). Will require box off to clean up properly then paint entire outer box sides. I'm sure GM cheaping out and not installing rear fender liners is at least partially to blame. Truck is well washed in the winter months. In extreme cold, wipers are painfully slow and if it's cold enough, will not cycle at all. Ridiculous design of the battery cable end saw tiny metal wedge that helps to secure, randomly break, cable now semi loose, positive post burn right off the battery at start up (ironically happened in front of gm dealer when in to pick up fuel system parts).
While it's a 2011 and you'd expect it to start showing it's age, bulk of the problems started 2 to 3 years ago.