2015 Gmc sierra

[keakar]

they are beautiful trucks, I hope you get a good one but don't fool yourself thinking you know how to fix or solve a vibration issue, just test drive as many as it takes to get one that doesn't vibrate on the test drive.

look for a very smooth road and drive between 65-70 mph and speed up and slow down a few times as that can trigger it. if you feel no vibrations, then its one of the good ones.

I noticed mine was whimpy and weak when pulling out because its always in 4 cylinder mode so you have to mash the pedal to kick it in v8 mode to make it pull out like you normally do with your old truck. I hate that v4 mode but im told you can get a tune to lock it in v8 mode.