Hey guys I'm new to this site and I'm wondering I just had the front differential and drive shaft replaced but found that occasionally I could see momentary blinking on my 4 wheel drive button I have the 4 button now it stays blinking in 4 lo and will blink in all other settings but never lock into any. Has anyone else had this problem and if so how did you fix it ? It also just shifts back to 4 lo which is a serious problem