2015 Rough idle when in gear.

[Craig43]

I have a 2015 EL EXT that when in gear idles rough at around 500 rpm. Then when I release the brake the truck lunges a little as the rpm goes to around 1000 without touching the gas. Anyone have this issue and or ideas of what the cause might be?
Thanks for any help.

 

[Trainmaster]

Check for an ignition miss. Coils and plugs.

 

[coolzzy]

How many miles on the truck? Probably time for a spark plug change. Could also be a dirty or bad throttle body I believe there was a rash of bad throttle bodies in the 15s but most were discovered and replaced while still under warranty.. .

 

[Black]

I had the issue and replaced the plugs at 53k and issue was solved.
My gaps were out pretty good especially the front 2 cylinders.

 

[jeff kushner]

I had the issue and replaced the plugs at 53k and issue was solved.
My gaps were out pretty good especially the front 2 cylinders.

I wonder why those two. I thought the plugs were inserted by robotics but maybe there is another reason?

jeff

 

[Black]

Front 2 banks also had a fair amount more carbon build up than the rest.

 

[Craig43]

thanks. Dealer just called and stated it is the torque converter grabbing and will be replaced. I will do the plugs as well to avoid any issues in the future as my truck has 46k on it.