service 4 weel dirve

hi. my service 4 weel drive indicater comes on when I go into low range but then will go away and the lo light turns on when I turn my lights on. then the other day I saw something that as long as I have owend my rig for I have not seen a "full time" four weel dirve light came on after a hard shift of the t-case. I have done the code thing and the C.E. light flashes 5 times stops and dose 5 more.
Can you please help me. thank's a mil.

try this

http://www.automotiveforums.com/vbulletin/showthread.php?t=119880&page=2&highlight=service+4wd+switch