I have 2011 GC Laredo X with the V6, last month (while on vacation) driving from Missouri to Florida, we stopped for lunch about a third of the way there, got back in the car and it wouldn't start. Hit the button or turn the key (tried both), and the engine would crank, but wouldn't fire. We had it towed to the nearest Jeep dealer. When we got there, it started right up while still on the rollback. They ran it for codes and found nothing. We went on our way. It did the same thing 2 more times while on vacation.
After returning home, the problem repeated and we had it towed to the home dealership. That was on 6/2. To make a long story short, it's still there. They've replaced the crank sensor, both fuel pumps (apparently these require 2) and it's still doing the same thing. The dealer says they're stumped. They're working with Jeep tech assistance and they've given them some additional tests to run, but they say the next step might be replacing the "computer". I'm guessing this is the Power Control Module. Does anyone have any ideas?