Hey i'm new to this whole forum thing. Hopefully i can get the help i need! I have a 1998 suburban 5.7 slt. When i turn the key on, the 4x4 buttons turn on for a few seconds and then they all turn off and my " service 4 wd" light stays on. I have replaced fuses ( fuses were fine but i changed them anyway) , checked and cleaned all connections, and brushed and cleaned the board for the switches. I pulled out the T case motor and tested it, seemed to work fine. Any input would be much appreciated!

The snow will be here soon, gonna need the 4x4! I HOPE!!