The cylinder head on our 2012 Durango with the Pentastar V6 was replaced in December 2016. The only indication that the cylinder head needed to be replaced was the check engine light. Following the head being replaced a ticking noise developed. It's my wife's car so I don't exactly how long after the noise developed but she informed me about mid January 2017 which was about a month after and she did indicate it had been making the ticking noise for at least a couple of weeks before that. I brought it in to the dealer that did the work and they stated it nothing to do with the the replacement of the head and it was lifters. They stated the lifters are not replaced when they do the head and that the current lifters are bad and they just wear out. So they replaced the lifters. The dealer dropped the car off at our home since we weren't home and when we first started it up there was no improvement and the ticking noise was exactly the same. I've searched forums and can not find a similar situation since most cases of ticking noise and cylinder head replacement seemed to take care of the issue. Any suggestions?