Installed stock wheels and tires and problem still exists. Also got vibration with TC and SC off.
Off to garage today to install adjustable UCA and bracket. Will have them check my front suspension and bump steer. This may be a power steering issue as I can't seem to get the vibration until the car and tires have warmed up. Well I know for sure it's not tire pressure, wheel balancing, belt shifting in tires or wheel alignment.
2011 GT CS MT
JLT CAI/93 tune, Alum DS
Rear seat delete