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  1. #1

    Default Service 4wd light

    Hello all,

    Recently when i went to take our 2002 GMC Yukon XL 1500 out of 4wd, i lost all lights on the transfer case control switch and the service 4wd light came on in the panel. I replaced the transfer case control switch, but that did not solve the problem. I still have no lights on in the control switch and still have the warning light "service 4wd" Any suggestions?

    Thanks,
    John

  2. #2

    Default

    So I'm goin to guess that it will not shift into 4wd now?



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  3. #3

    Default

    its more than ikely your shift acutator motor. and or the silanoid in side " looks like a small black donut"
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  4. #4

    Default

    So i decided to look at everything again and i found a "atc" fuse that was blown and it ended up being the problem all along! Yes, I feel stupid! But glad the problem is fixed!

  5. #5

    Default

    Quote Originally Posted by johnlazelle View Post
    So i decided to look at everything again and i found a "atc" fuse that was blown and it ended up being the problem all along! Yes, I feel stupid! But glad the problem is fixed!
    No worries boss. Glad you could get it fixed for .05$ lol

  6. #6

    Default

    glad thats all it was. my bad i though u said u checked the fuses... but its better than a actuator motor

  7. #7

    Default

    I posted a little while back about a 4wd problem on my 05 Yukon, now I can't find the post or figure out how to make a new post. Any way , after taking the dash switch apart and seeing nothing wrong with it, I put it back in. Since then, the battery has gone dead twice and now the neutral lite is on but it's in 2wd. Hooboys

  8. #8

    Default

    Quote Originally Posted by johnlazelle View Post
    Hello all,

    Recently when i went to take our 2002 GMC Yukon XL 1500 out of 4wd, i lost all lights on the transfer case control switch and the service 4wd light came on in the panel. I replaced the transfer case control switch, but that did not solve the problem. I still have no lights on in the control switch and still have the warning light "service 4wd" Any suggestions?

    Thanks,
    John
    I had the same problem, 2 computer scans said it was the motor, but it turns out it was the sensor on the motor

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