If you have any work done on your transmission or if you're having switching gears this should help you
Car module:Car module GM chevy suburban 2015
Purpose: reset transmission control box
The tool used: Launch Thinkdiag
1.Connected Thinkdiag and vehicle by OBD port.It shows green light mean connection succeeded
2.Open the app and go into the Thinkstore
3.Select our software
we can either select GM which will let us reset all of our GM
and chevy vehicles or we can select RESEBOX
Here, we select RESETBOX
Connecting bluetooth....
Select GM
Communicating ,pls wait...
Switch on ignition ,Then press OK to continue
4.Choose your vehicle.here we choose : Chevrolet->suburban->2014-2018-transmission control module
5.Okey, Confirm our car information,press OK to continue
3.Select our software
we can either select GM which will let us reset all of our GM
and chevy vehicles or we can select RESEBOX
Here, we select RESETBOX
Connecting bluetooth....
Select GM
Communicating ,pls wait...
Switch on ignition ,Then press OK to continue
4.Choose your vehicle.here we choose : Chevrolet->suburban->2014-2018-transmission control module
5.Okey, Confirm our car information,press OK to continue
6.just press Reset, It will do the job automatically!
Work done!
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http://www.obdexpress.co.uk/wholesale/launch-thinkdiag-obd2-code-scanner.html