Maybe a grounding issue?

[exDodgeguy]

Ok so whenever I set my settings on the steering wheel for my preferences. they keep changing. Specifically I set the alarm feedback to honk the horn when I lock or unlock the doors. It is a factory installed keyless entry on the 03 suburban 1500 z71. Also twice when I had a DVD playing for the children and I hit the seat position button the seat goes to the selected setting but it also changes the audio system back to FM. So I want to check all of the grounds, is there a diagram that shows where all of them are? I am 6'4'' and overweight and really don't want to try to crawl under the dash more than I need. Thank you all for your assistance.

[gmtech4]

scan the BCM first with a real scanner ,,,,to many pics where grds are ,,,,