Hop under the front of the truck and unplug the front diff actuator. There are 2 electrical plugs on the front diff, if you are unsure then unplug both of them. Install new fuse and shift into 4wd, if the fuse does not blow then replace the front diff actuator(this is common problem for blowing the fuse) hope this helps
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Tuesday, March 4th, 2008 AT 2:41 PM