issue 2014 rough engine idle

[firecat_30]

Ouch... I hope they fix your problem.. my 2015 with 6.2 and 8 speed would almost die out in neutral idling and highway shifted terrible.. it was torque converter lock up issues for on the road, never figured out why every now and then it idled like it fouled a plug. I traded truck and new one is perfect.. good luck, maybe try mentioning the converter and see if they can find a TSB on that.

[Bxnanaz]

Try running 93 octane on your next fill up and see if it fixes it.

[Roy T Harish]

I have a 2017 high country with a vibration at idle from new .

they shimmed motor mounts vibrations softened.

now I have 30,000 and vibration is back.

any idea on what I can do