Question about 1997 GMC Sonoma
Under the battery tray is the pull-in cabble and vacuum diaphragm for the front axle. Check the diaphragm for any holes and see if the cable is moving freely. Sometimes I have seen acid from the battery drip down and burn through the diaphragm. I have also seen the cables rust up and not move because of the poor location of this unit. I have also seen internally in the axle the collar for the locking gear break so check both places.
Posted on Sep 07, 2009
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Posted on Jan 02, 2017
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