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clicking noise from transfer case maybe?

This is a discussion on clicking noise from transfer case maybe? within the GM Trucks forums, part of the Vehicle Specific category; i'm trying to figure out if my transfer case is shot on my 1999 z71. i have a slight clicking ...

  1. #1
    Member 2-bowties&abird's Avatar
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    clicking noise from transfer case maybe?

    i'm trying to figure out if my transfer case is shot on my 1999 z71. i have a slight clicking sound coming from what seems to be the transfer case when in 2wd accelerating. when i put it in 4wd the clicking sound gets even worse and also has a sound almost like a coat hanger wrapped around the driveshaft (really sounds bad lol). is the transfer case junk or do you guys think it could be something else like maybe the axle? the reason i'm thinking transfer case is because of when i engage 4wd it gets worse.

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    Veteran 0rion's Avatar
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    have you checked your u-joints?

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    Member Zedtwentyeight's Avatar
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    CV's

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    ʢ ൧ ൨ ൩ ൪ ൫ ൬ ൭ ൮Ր Ց Ւ Փ Smittro's Avatar
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    Or the 4x4 on the fly unit is'nt fully engaging/functioning/disengaging properly..
    :\Users\Steven\Pictures\d6ftg5nh.gif


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    Member 2-bowties&abird's Avatar
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    Quote Originally Posted by Smittro View Post
    Or the 4x4 on the fly unit is'nt fully engaging/functioning/disengaging properly..
    ahh, this makes me curious about something... the guy helping me change the oil last time i changed it asked if my 4wd was engaged because his wife had accidentally hit auto 4wd and had engaged his when he went to change his oil without him knowing. whatever is underneath there that is supposed to be spinning freely is not. is it maybe the motor that engages/disengages the 4wd?

    thanks guys

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    ʢ ൧ ൨ ൩ ൪ ൫ ൬ ൭ ൮Ր Ց Ւ Փ Smittro's Avatar
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    Quote Originally Posted by 2-bowties&abird View Post
    ahh, this makes me curious about something... the guy helping me change the oil last time i changed it asked if my 4wd was engaged because his wife had accidentally hit auto 4wd and had engaged his when he went to change his oil without him knowing. whatever is underneath there that is supposed to be spinning freely is not. is it maybe the motor that engages/disengages the 4wd?

    thanks guys
    Your best bet would be to get it to a shop asap. Have a professional give his oppy on what's going on there. If it is the servo for the shift on the fly and it's possibly not fully engaging or disengaging the transfer case, this could lead to further problems with the drive line later if not sooner..

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    Living the Dream LS1FirehawkWS6's Avatar
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    Quote Originally Posted by 0rion View Post
    have you checked your u-joints?
    I'd start here
    Quote Originally Posted by Zedtwentyeight View Post
    CV's
    This as well, if the noise does get greater in 4WD


    How many miles on the truck? Do you plow with it?

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