2015 1LE 3600 miles. tremec tr-6060 trans. Low speed(rpm) shifting 1st to 2nd gear. Sounds like a lot of back lash type noise. Very audible when loading and unloading the trans. Also does it in reverse, sounds like something is loose. Chevy tech identified as coming from the transmission. Just not sure if they all make this noise. Waiting to compare to similar model.