Question about 1995 GMC Jimmy

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95 jimmy 4x4 drive acting weird.

I have a 95 jimmy slt. When i shift from 2hi to 4hi the light next to 4hi comes on and when I'm driving slowly the lights for all wheels turn on but if I start to speed up those lights go out until I start hitting the breaks and they go out again when I'm completely stopped. The lights for all wheels stay on in 4low. After testing the 4w drive, proven working due to the "bucking bronco effect" turning, when I switch back to 2hi the 4w drive is still working cause the truck still bucks during tight turns and if I'm going slow enough during those tight turns the truck stops all together. Whats going on?

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  • sbroscious Sep 29, 2009

    @co7196 I'll have to take it to a mechanic to check this out as I had to goole just to find out what you were talking about lol!

    @jameshuff76 I'm a bit confused as to how a short behind my dash would affect my 4wd shifting ability when my shifter for the 4wd is right above the transfer case asfaik (e.g. it is where a normal shift stick would be in a manual drive vehicle) can you please explain?

  • Ned C Cook
    Ned C Cook May 11, 2010

    Have or chl theMAF sensor on the fuel issue. If dirty or bad it will affect the ecu and I think the ecu is respondant to the four wheel drive position. Verify relationship. This is only a thought.



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Eh! I gotta google too. :) The Ecu computer controls so much on these vehicles these days that the dealers aren't equiped tofix their own makes.. It is possible like the other post sai, that there is some form of bsd connection. I figure the computer controls the information highway and keeps the operator informed on the happenings. If I can suggest looking at the transfer case for any electrical that could be talking to the computer Or possibly a sensor that is poorly connected. Is there a particular time or condition like rough roads/off roading or any thing else you can narrow it down to? If you live local to riverside or Mira loma, I would be more than happy to have you drop over and work together on this. I'm retired and home 24/7 and need something to do. Won't cost, a mechanic at a shop would so just let me know. I have a few ideas we can then discuss. It would take a ck list to cover it on here. My name is Ned @909-630-3192. Nothing to lose. good luck and feel free to call.

Posted on Sep 29, 2009

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You have a short, most likely behind your dash board that is causing your four wheel drive indicator to come on the only way to find out is to start looking up and underneath your dash board.

Posted on Sep 29, 2009


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