I had been a Lexus-for-life customer until this purchase. There is a vibration in the vehicle that resonates in the passenger seat that I am told after three trips back to the dealership is coming from the transfer case and is characteristic of all GX 470s (we also own a 2004 Tahoe that has a better interior ride). I have owned two LX 470s prior to going to the GX and regret every penny spent. When I contacted Lexus corp they were simply complacent about my dissatisfaction, they thanked me for the call and, in essence, recommended that I shop at a different Lexus dealer next time. Recommendation: buy a different make, for the money there are a lot to choose from.
Vibration resonating in the passenger seat is a constant irritant.