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  1. #1
    Jr. Apprentice Ariner1979's Avatar
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    Default 2001 Chevy 4x4 problems

    I was wondering if anyone else has had this problem.
    My buddy has a 01 chevy1500 shortbed the 4wd isn't working at all and the light won't even come on. I traced the wires back to the ball type switch on top of the t case (np261). If I were a betting man I'd say the ball switch isn't working. I say this because my reverse switch on my nv3500 has the same style switch and it went bad. Like I said I just wanna know if anyone else has had this problem before I make him go buy a new switch. Input anyone?
    Ariner
    -1979 gmc Sierra k25, nv3500 trans, np208 tcase, 5.7litre engine from 1994 Chevy, 2" lift, 265/75/16 BFg at

  2. #2

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    Most of the time, when a GM 4x4 no longer acts as it should when in 4x4 selection, and the service 4WD light is not on, the problem is usually in the disconnect on the front passenger side axle. Failure to engage will not let the front axle provide traction.
    Ray

    '09 Avalanche LTZ - Black
    '05 Envoy XL (sold)

  3. #3
    Jr. Apprentice Ariner1979's Avatar
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    I'm not getting power to my actuator and the light I was talking about was was the light that just says "4x4". My mistake for not making that clear but thanks for the reply!

  4. #4

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    Quote Originally Posted by Ariner1979 View Post
    I'm not getting power to my actuator
    Which may be an indication that the TCCM has not tried to switch into 4x4

    Quote Originally Posted by Ariner1979 View Post
    the light I was talking about was was the light that just says "4x4".
    So, if you are saying, when you switch to 4x4. the 2wd light goes out, but the 4wd light does not come on; then yes, the problem is probably the switch. Try twisting the knob 20 to 50 times, the wiping motion may clean the contacts.

  5. #5
    Jr. Apprentice Ariner1979's Avatar
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    Yeah like you said the 2wd goes out but the 4x4 light doesn't come on. Ok thanks I'll try that with the switch.

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