One problem related to automatic transmission control module has been reported for the 2014 Chevrolet Silverado. The most recently reported issues are listed below.
5/15 radio display lost power, recurred at least 3 occasions; 9/15 trailering in "tow mode" on interstate at 58 mph when vehicle slowed down and rpms increased when stepping on accelerator; had to pull over onto interstate shoulder and stop. Vehicle began shifting normally again- dealer stated that they updated transmission shift points and tcm. 10/15 harsh shifting and clunking from right rear when turning right. 1/16 harsh shifting and clunking from right rear when turning - dealer replaced "u joint" and "adjusted computer shift points. Vehicle still has harsh shift and clunk in right rear which occurs daily.