Engine Vibrations on 2012 Tahoe

[NycRedSuxH8R]

Hey whats up guys, i would first like to thank you for your opinions and taking your time to read my problem. I just picked up 2012 Tahoe LS with 19k miles. Everything seems great accept for the slight shake on the engine(can see little jerking) and a vibration that i feel inside the car. This vibration only happens when its on idle. original thought was maybe it was the engine motor mount but when i slam on the gas pedal, the engine does not move. Is this normal? I still have the warranty until next year but wanted to get your insight before going to the dealer. Thanks

 

[MO Viet Vet]

No CEL I take it? If under warranty let them look at it and report back what they say.

 

[NycRedSuxH8R]

Thanks Raiderron for replying to my post. I dont have any CEL/lights coming on. I guess i have to bring it to the dealer and see what they say.