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Old 09-05-2012, 08:24 AM
Wade94 Wade94 is offline
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Default 4x4 not working, 4x4 instrument lights randomly coming on

94 extended cab with manual. 4x4 has never worked in this truck since purchase, no details from previous owner. About a month ago the 4x4 and 4x4 low range lights on dash started coming on randomly. Every other start up the lights are on, as well as the push button lights come on, but I get no response from the push buttons and 4x4 is actually not working. Basically, I start up and all the 4x4 lights are on but no 4x4, buttons do nothing. Next start up nothing is on, still no response from buttons. And on and on. I checked 4x4 module by unplugging the harnesses and pushing reset, got 4 or so second apart flashes, if I understand it correctly that is telling me the module is alright and my problem exists before it. Not fully sure what steps I should take to isolate the problem.

On a side note, my ABS and brake light on dash began lighting up around the same time as the 4x4 lights issue. I have gone thru the brakes to find nothing wrong. Info has led me to check pin 6 on module harness but it appears fine. My 4x4 issue also led me to checking pin 6, so I am not sure if these 2 issues are related. Is the control module under the dash relevant to both the 4x4 and ABS system?

Thanks for looking and any input you have may have to help resolve this situation.
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Old 09-16-2012, 07:01 AM
coyotpup coyotpup is offline
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Default Re: 4x4 not working, 4x4 instrument lights randomly coming on

I had similar problem and cheapest way to fix was manual transfer case $50 and a few hours work was good to go ^^
I just take out the light when they start acting up on older rigs or trail rigs the flashing bugs me.

I would guess your speed sensor is out so won't go into 4x4 and brake issues... who cares just go manual and disconnect the abs, I have yet to have a problem and have done this several times.
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