2011 Tahoe vibration

[Lindquist]

I have a 11 tahoe that has a vibration when holding 30 mph. It only happens when dropped down to v4. It does not do it in manual or tow/haul. If you let off the gas it stops or give it a little extra it goes back to v8 and stops. Only when feathering pedal to stay at 30.

Thanks.

 

[Fagelito]

..same here on a 2011 LS. Appears that it could be a motor mount or your AFM is going out.

 

[07 black beauty]

Could be mounts, but I would disable or delete that crappy DOD\AFM bull sh*t!!

 

[Lindquist]

Could be mounts, but I would disable or delete that crappy DOD\AFM bull sh*t!!

How do I go about that?

 

[Mrsteef]

You could either tune out AFM or physically delete it. Tuning is a bit cheaper but I would go the physical route