I have a T6. 2017 transporter LWB. I have had a vibration since new. Taken the van to dealer 7 times with no success. ( that’s normal they say). The vibration is between 1600/2000 rpm. Sitting on 100kph in 7 gear the van vibrates through the floor. Steering wheel and dashboard. You can’t feel the vibration in the passenger seat. Once you get over 2000rpm then it disappeares. If you take your foot off the accelerator in 7 gear and van goes into glide mode it also disappeares. Can anyone help.