Heated seat issues

[06sierradenali]

Currently have an 06 Sierra Denali with heated seat issues. Here are the scenarios that I have run into

Driver side stays on unless I press passenger then it shuts off and vice versa

if I put driver side on low power and the passenger side on high they both stay on a vice versa

Both sides will stay on high setting on back, but if you switch either side to bottom/back then they both shut off

 

Anyone have any idea what the issue could be

 

 

[swathdiver]

I don't know what's wrong but know how to find out.  A subscription to AllDataDIY will provide you with an online shop manual for your truck along with the trouble shooting guide for the seats.  Access to a bi-directional scan tool like the Tech-2, that can read BCM codes, will tell you what the problem is in moments, there will be stored codes and the symptoms telling you why or how something has failed.