99 Jimmy 4x4 problem

Ok, I have a problem with my truck, the Transfer case control module keeps
dying on me I've replaced it once with a salvage yard one, for some reason
it will work about two weeks than it just goes out again. when it goes out,
I have no lights on the dash and I dont hear it click when I turn on the
ignition switch. I talked to someone they told me my encoder motor could
be bad, how could I tell that?? When the 4x4 did work it shifted fine in
and out of all ranges. I have the NP8 transfer case.

no one has any suggestions?!??

"Adam F" <abuse DeleteThis @verizon.net> wrote in message
news:WR2Og.629$Ij.150@newssvr14.news.prodigy.com...
> Ok, I have a problem with my truck, the Transfer case control module keeps
> dying on me I've replaced it once with a salvage yard one, for some reason
> it will work about two weeks than it just goes out again. when it goes
> out, I have no lights on the dash and I dont hear it click when I turn on
> the ignition switch. I talked to someone they told me my encoder motor
> could be bad, how could I tell that?? When the 4x4 did work it shifted
> fine in and out of all ranges. I have the NP8 transfer case.
>
>