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my 2003 JImmy wont disengage from 4x4 to 2 without blowing the fuse for the electronic switch. until the fuse blows there is a howling noise in the front passenger corner then when the fuse blows the howling stops? other than that its a solid ride
That is the systems way of telling you something is wrong. Most likely is the 4wd actuator needs replaced but there are a couple of other possibilities and none are very cheap. Unless you are insistent on doing this yourself I would get a professional diagnosis , then possibly do your own repair. could be your switch !? could also be the 4wd control module!? sorry but proper diagnostic testing is the only way to determine the cause.
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You're reading When I switch my 2003 GMC Jimmy from 2WD to 4WD both the 4 Low and 4 Hi buttons light as well as the red neutral button between the 4 L and 4 H. Additionally when I press the "4WD as required" button it lights in addition to the 4L and 4H
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