Flashing rear diff lock light

[HumminNBoatin']

Well if you have not noticed any mechanical problems I would be willing to bet your TCCM (Transfer Case Control Module) is going bad. Its located under the drivers side of the Dash. It's a black box that is a little bit larger than a pack of cigs. I have no clue what it costs to replace this box but I am sure its not cheap. I would have someone put a tech2 on it and see what they find.

[splne1]

Check all the electronic conections on the T-case also. Good luck!!