Got a quick "kudos" story about Chrysler/Jeep. I will try and make it quick anyway. We have a 2011 Jeep Wrangler unlimited. In December the check engine light came on and we noticed a rough running engine. I did some research and found some likely caused such as fuel/ignition issues. I started there hoping it would be an easy fix.
First we did a check of the light. The code was a cylinder 5 mis fire. Tried a tune up first. Changed the plugs, coil and wires. Nothing. Next we started running sea foam through the engine and using only super unleaded. Nothing.
I started doing some research and found that this engine has a history of cylinder head issues. Most commonly on the 3.6 liter engine, but not on our engine which is the same engine, but just a different displacement at 3.8 liters. Same symptoms though with a cylinder mis fire specifically on cylinders 1,2 (I think) and 5.
Since the easy fixes did not work we took it into the jeep dealer. We dropped it off first week of March and the warranty had already expired the month before. They diagnosed and doing that the cylinder head needed to be replaced. That was going to be a $2K invoice.
I called Chrysler customer service and plead my case. Pointed out the 3.6 liter engine has the same issues and found out during the conversation that Chrysler is extending the warranty on the 3.6 up to 150K miles because of this. They created a case and said they would make a decision and let us know. They called back yesterday and told us that not only are they going to cover the entire repair, but extend our warranty for another three years!!
We are super stoked and wanted to post this here in case it could benefit anyone. The 3.6 liter pentastar engine "I think" is in the Jeep Liberty's. This is the motor that they will cover up to 150K miles for the cylinder head issues under what is effectively a silent recall. The wranglers have the 3.8 liter engine. I'm not sure about the year models exactly, but in my research I found that it was mostly 2011 and 2012 that had these cylinder head issues.