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4-Low will not engage...

6448 Views 6 Replies 5 Participants Last post by  Cool_Canuck, 
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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.

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The grinding is the park rod trying to engage the park gear while the guts of the trans are free spinning just from internal drag equalizing their speed to that of the torque converter. Power is going into the transfer case, but the planetary is not engaged.
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