Growling, grinding, knocking from transmission

[HaliNox]

2015 Equinox, 3.6l, 6-speed auto.

All of a sudden experiencing growling, grinding, knocking sounds from transmission at low speed. Afraid to increase speed.

Anyone have similar issues?

 

[dman1948]

I have a 2011 LTZ 2.4 FWD and when I kick it down to passing gear, when it kicks out it makes a noise sound like the tranny is coming out..
Dman1948