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Discussion Starter #1
Looking for any TSB or recall information concerning the encoder motor on an autotrac transfer case.


I found TSB 99-04-21-002 that looks encoder motor related but don't have any text on the bulletin.
 

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<H1>4WD Transfer Inoperative (Replace Actuator/Shift Detent Plunger) #99-04-21-002 - (04/01/1999)</H1></TABLE>Four-Wheel Drive (4WD) Inoperative (Replace Transfer Case Actuator/Shift Detent Plunger)


1998-99 Chevrolet and GMC C/K Models (Tahoe, Denali, and Yukon)


1999 Cadillac Escalade


with 4L60-E or 4L80-E Automatic Transmissions (RPOs M30, MT1) and NV246 Transfer Case (RPO NP8)<A name=ss1-604831><A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=604831&evc=numSrch#ss1-604831" target="_blank">
<H5>Condition</A></H5>


Some owners may comment that the 4WD is inoperative.<A name=ss2-604831><A href="http://service.gm.com/servlets/BlobShtml?ShtmlFile=604831&evc=numSrch#ss2-604831" target="_blank">
<H5>Cause</A></H5>


This condition may be caused by an inoperative transfer case motor (actuator).
 

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Discussion Starter #3
That is not what I expected. I was hoping the document had a little more information. Oh well.


Thanks for posting the TSB.
 
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