Question about 1999 GMC Jimmy

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4x4 Problems I have a 99 GMC Jimmy with push button 4x4. Placing the car in nutral followed by pressing the button it doesn't flash like it used to just lights up the next setup 4x4 hi. You can hear the transfer case locking in but front tires don't move. The transfer case is getting vaccuum. Drive shaft going to front axle does spin. The Vaccuum actuator under the battery tray is working normal no cuts or anything. Also cable from vaccuum line is not broken. Did check to make sure the actuator on the front axle is getting power 14.26 volts going to it. can you help me I'm stuck.... Thanks

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Sorry lost here ,never seen one but if transmission shaft is turning to front diff then the problem is their,could be anyting from a sheared diff pinion to a broken planet wheel or possible evan a snapped half shaft or the spline on the end of the half shaft has worn and rounded off

Posted on Nov 05, 2008

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