Hi all,
We recently purchased a 2019 GMC Yukon XL 4wd. We have not driven it much, but noticed that when we switch from 2wd to the auto 4wd system, the car begins to shudder. It feels like we are driving on a bumpy road or over small gravel. It does this at low speeds, while accelerating and at highway speeds. It drives smoothly in 2wd and we are wondering if this is normal or an issue with the 4wd system? It shudders similarly while in 4wd high, we only tested this briefly as our roads are currently mostly dry and we have no snow/ice (and have not tried 4wd low). Thanks in advance for any help/comments.