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Symptoms: No dash lights....nothing happens when I turn the 4x4 switch. When I start the truck I hear what sounds like a motor (transfer case motor maybe?) trying to switch (even though my dash switch is on 2WD)...it trys three times and stops.
What I've done: Checked fuses ...they appear ok to me
I don't have a maintenance manual yet ... hoping someone point me in the right direction. Perhaps there is a thread on here that describes a similar problem?
In the mean time I'll be searching around the forum.
Thank you in advance...
-Mike
EDIT: By the way... the 4x4 used to work up until about 2 weeks ago. Started having a hard time getting it to go into (and out of) 4x4 and then it just stopped all together.
Update: I have power (13v on one of the wires) on the 4x4 switch on the dash. Also, the noise I hear is definitely coming from, what I believe to be, the transfer case motor. It cycles three times after I start the engine. Not sure what that indicates.
Update 2: Relays under the hood appear to be working (They click in sync with the transfer case motor). I swapped them around, same problem & same symptoms.
Sounds like the motor or the gearing/switching mechanism connected to the motor is the problem ... sound about right? ...other threads seem to indicate a "GEM" under the right dash?? ...not sure what a GEM is ...
mike, that sounds like identical to the problem I had with my '01 that turned out to be a stripped gear between the shifter motor and the transfer case in the unit you pictured. The light will not come on because it has to shift to trigger the light. I did find a used one that worked, but ultimately put on a new motor and gear reduction unit. Can't remember what it cost--thinking maybe 60 for the used and 100-something for the new. Hope this helps-could be worse news I suppose!
I don't think you want to know what a Gem module is. It's a very expensive little box that controls the 4WD among other things and you might not even be able to find one. I have heard of people taking them apart and cleaning the contacts in them. I think it is somewhere under the dash on the passenger side.
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