im having a issue with my blazer it started all of a sudden i have the service 4wd light on in my dash i thought it might be the encoder moter so i changed that and its still on i got another tccm and tried that and the light still on it engages into 4wd fine but when it disingages sometimes it goes into neutral and i have to mess around with the buttens to make it work again i also scanned it with a scan tool im getting a co 332 transfer case lock circut low any ideas ?? where to look

 

oops code 323