I’ve been having a RPM specific vibration on my V6 Tundra. Right around 1500 rpm I get a shake. Let off the gas or give it more gas, goes away? Thoughts?

Yesterday, a turn signal light started freaking out on the dash. All turn signals seem to be working. Then ABS came on

Turn signal solidly lit, not flashing

I think that above mentioned rattle had just shaken some connections loose. I hope. If not, what do you think?