First number is the dealer # or tech #
0.50 is the flag time they gave the tech for looking at it 1/2hr
transfer case actuator is inop, Means is not operating
need to replace 4wd ecu is his or her recommendation. or they recommended the actuator and the ecu, LOL
I have never seen a 4wd ecu fix this issue.
there is no way he diagnosed the issue properly in 1/2 hour. My Guess is they guessed and hoped you would not fix in so he can get back to gravy work.
So what is ur suggestion??? Do u have one?? Cause so far u have denounced my only lead