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4-Low will not engage...

6453 Views 6 Replies 5 Participants Last post by  Cool_Canuck
My electronic shift 4x4 will not engage in low. When I turn the switch from 2 to 4-hi, I do so in neutral, and everything works fine. I then procede to turn the switch to 4-low, and the light comes on, but nobody is home. No forward or rearward motion, and a terrible grinding if I try to put it in park. If I switch back to 4-hi, the low range light will turn back off, it will "clunk" and I can move again.

Where should I start?

BTW: I was on a hill, with my foot on the brake. I even tried letting it roll to move the gears, but to no avail.
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No forward or rearward motion, and a terrible grinding if I try to put it in park. If I switch back to 4-hi, the low range light will turn back off, it will "clunk" and I can move again.

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That is not a good thing. Sounds like you have a problem with your transfer case not engaging low range properly.
The transfer case is free wheeling when 4low is selected. Has nothing to do with vacuum.
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