Sorry, the NHTSA has not posted this TSB document yet.
You can still get the detailed info from Cadillac for this TSB. Call your local Cadillac dealer's service department & ask for a copy of TSB# 17-NA-091.
Vibration Felt Throughout Vehicle While in AWD Cruising at Highway Speeds
Some customers may comment that a vibration is felt in the steering wheel, front or rear
seats or cabin body boom while cruising at a steady state at highway speeds from 60-75
mph (96-120 km/h) in AWD mode.
This condition may be caused by the driveshaft being out of balance
