2003 Columbia w/6 pin j1708 cluster not working

I have replaced the 6 pin datalink. I have also checked for power( key off) at C and D terminals and there is power . My orange and green data (wires A and B on data link ) is open with key on and it said thats normal. For you 6 pin J1708 users what was the fix ? The cluster cycles when the ignition is on or truck cranks but the cluster goes dead after that . The only gauge working is the fiel and battery gaige . I doubt the cluster is bad because i am not getting data reading to my scan gauge which plugs into my 6 pin diag connector . What was your fix ?