Hi! I've have my 22' Durango for about 5 months now, has 3600 miles on it. All of a sudden this morning, at about 25MPH I had a mild clunk followed by loss of engine power... I let off the gas and tried to accelerate again, another clunk and loss off engine power. I was right around the block from my house so I took it slow home. As I mad the turn the check engine light came on, once in the driveway I lost reverse, but forward still worked... I shut off the car, went back out 20min later, the check engine light is still on, but now reverse works.... I'm pretty lost at this point... Any ideas??