I own a 1999 Ford F-250 light duty. Went out mudding yesterday to find out my 4x4 isn't working. It was just fine two weeks ago. It's an electric shift and when I engage 4x4 and 4x4 low all the dash light go on like normal. Checked the hubs and the are engaging properly. My t-case is engaging properly as well but my axles are not spinning. I haven't had time to take apart the diff and inspect it yet. If anyone has any suggestions please let me know.