I have a 2019 Nissan NV 3500 SL passenger van with 67000 miles on it. Bought it brand new. I’ve never had issues with it until the last couple of months. It started shaking at 55 miles an hour and stops shaking at 60 mph. We are about to have our mechanic look at it and would like to know if anyone knows what this is? It happens when we are breaking and accelerating. Also, if you know what the problem is, does the commercial warranty cover the repair? I would like to avoid the dealership and take it to our local mechanic unless I need to file the repair through the warranty.
