Question about 1986 Chevrolet Chevy

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How do you know if 4x4 working ?

How do you know 4x4 not working ?

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  • KAREN GABRIEL Jun 02, 2009

    no it is not stuck just wondering if it works ?when I switch to 4x4 it dosen't kick in wondering if its the actutor ?? and by the way where is located ?

  • KAREN GABRIEL Jun 02, 2009

    how do you know 4x4 not working ? when we try to switch to 4x4 the lights are blinking when try to turn to 4 hi and it dosen't kick in ? what could be the problem ? we checked fuses they are good !

  • blueextc3221
    blueextc3221 May 11, 2010

    put it up on jackstands or lift. Check for all 4 wheels spinning.

  • tylerqew May 11, 2010

    Is it stuck in or out of four wheel drive?



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Does it have locking hubs on the wheels? Turn those, and take 'er through a really buug mud hole. If all four wheels are throwing a rooster-tail, you know they're working! No, it shold make a small whining noise while you are rolling. You may have to pull back and forth for it to lock in if you haven't had it in four wheel drive in a while. Like blueextc3221 said, put it on jack stands and see if all four wheels pull. You may not want to fire the truck up, but try to turn one of the back wheels and see if the front are pulling too. Hope this helped.

Posted on Jun 02, 2009

  • tylerqew Jun 02, 2009

    Pull the truck back and forth and it should click.


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Take it in the mud and see if it gets stuck.

Posted on Jun 02, 2009

  • Eldric Venne
    Eldric Venne Jun 02, 2009

    You probably have a problem with the vacuum actuator. They are bad about not pulling the front end in. Make sure you are receiving vacuum at the front differential.



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