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Old 12-04-2010, 06:14 PM   #1
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Default 4x4 problems

Hey everyone my brother'* 93 chevy silverado'* 4x4 fuse is instantly blowing when we replace it. it is a manual 4x4 transfer case with an automatic trans. I am wondering if it is the locking mechanism in the front diff. Any input would help thanks.
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Old 12-04-2010, 06:20 PM   #2
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Sounds liek a shorted wire. Start checking for any plugs in the transfer case, transmission. Something may have taken a hit or been pinched.
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Old 12-04-2010, 06:25 PM   #3
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that is our next step when it dries out in the garage. thanks, nothing like it crappn out after plowing. better than before. i guess
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Old 12-05-2010, 05:34 PM   #4
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Look for any pinched wires. You may have also gotten some snow jammed up there and knocked something loose.
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Old 12-06-2010, 12:56 PM   #5
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My bro said he looked but didn't see anything to obvious but he did unplug a sensor which I will get a pic posted soon. when unplugged the fuse didn't blow. So when I get some time today I will be testing the harness for a short and trying to figure out the how to test the sensor. So slow progress plus I need to hurry later in the week is more snow. I'll keep yoiu posted.
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Old 12-06-2010, 01:13 PM   #6
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If unplugged and no blow, the harness is fine. The sensor is shorted. You should be able to check for continuity between ground and each terminal.
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Old 12-06-2010, 06:40 PM   #7
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My bro found a new sensor and I didn't get around to testing the harness yet. I'm still trying to find a new job maybe tomorrow. I do appreciate the input.
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Old 12-06-2010, 06:43 PM   #8
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Not a problem. Just make sure to let us know if the problem was corrected.
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Old 12-06-2010, 06:45 PM   #9
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In the Tcase.... Sounds like a VSS

Has the speedo been good ?
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Old 12-06-2010, 08:50 PM   #10
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I definatlly will let you know the progress. The speedo has been fine as far as I can tell.
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