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4x4 without 4wd

Discussion in 'The Garage' started by bobalob, Oct 16, 2005.

  1. bobalob

    bobalob 1/2 ton status

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    Dad went to put his, new to him, 95 1/2 ton Chevy Silverado into 4wheel and got no front wheel action in low or hi. Apparently he didn't try the 4wd when he bought it a few months ago and this was the first time he needed it. He has no manual or knowledge (either do I ) about the truck so if you could clue me in on what the drive train components are and some trouble shooting or common causes that would be a big help.
     
  2. 1979jimmy350

    1979jimmy350 1/2 ton status

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    check to see if the front axle acuator is working this is a commen part to fail. You will see the actuator when you look at the front diff it is sticking out of the center section
     
  3. bobalob

    bobalob 1/2 ton status

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    alright thanks but as usual in Washington it is raining :( so I'll go look after I find tarp to put down over mud. How will I know if acuator has failed?
     
  4. 1979jimmy350

    1979jimmy350 1/2 ton status

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    you should be able to here the actuator engage if you are near it when the truck is shifted into 4x4
     
  5. unclematty

    unclematty 1/2 ton status

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    biggest problem with these is the solinoid goes out, POS in my opinion :D
     
  6. txfiremank5

    txfiremank5 1/2 ton status

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    More than likely the thermal actuator has failed. It's pretty common on the olde thermal style. If/when you replace it, make sure you get a new electronic version.
     
  7. sweetk30

    sweetk30 professional hooker Premium Member

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    or if you want for sure option 4x4 posi lock kit. cable kit for you to pull in the cab and lock in and out. :D
     
  8. 79k20350

    79k20350 3/4 ton status

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    Id go with the cable kit. its cheaper than an oem actuator and its gauranteed to work everytime right away. and with the posi lock you have the option of 2wd low.
     
  9. txfiremank5

    txfiremank5 1/2 ton status

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    Last I checked, the elec act. from the dealer was about 69-80 bucks. They want 150 + for the posi-lock.
     
  10. Afireinside

    Afireinside Registered Member

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    Anyone have part numbers?Also is there a difference between 1/2 ton and 1-ton.
    Thanks
     
  11. bernman

    bernman Registered Member

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    did you check the fuse? to start with
     
  12. Afireinside

    Afireinside Registered Member

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    Not trying to hi jack but I called my local dealer and they wanted more like $200,On mine the fuse is also blown because the actual wires on the diff. are melted.So anyone have part numbers?Pref.the new version(electric vs thermal?)
    Thanks everyone
     
  13. Pookster

    Pookster 1/2 ton status

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    go with the posi lock. In my opinion, it is the most reliable method out there, with the least amount of malfunctions.
     
  14. Afireinside

    Afireinside Registered Member

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    I know old thread but does anyone have part numbers?After the blizzard out here there almost extinct.
    Thanks
     
  15. 1986K10

    1986K10 Registered Member

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    I thought the electric and thermal were the same thing? Electric coil heats up fluid to move actuator? I dunno, pay no attention to me.
     

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