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LOCATION OF ESC 1994 GMC 4X4 COMPUTER OR BY THE THROTTLEBOBY????

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Posted on Jan 02, 2017

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SOURCE: 1994 gmc 4x4 non engaging high range four wheel

I would check to see if it is the Axle Actuator.  On that model truck there is an upgrade available that is electrical upgrade.  Instead of using a vacuum to engage the axle, it uses a small electric motor.  The cost for this part isn't much more than the older vacuum model.  Usually the electrical one runs around $100.  This is a relatively easy change that most any person can do with just about any experience.

Posted on Feb 03, 2009

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