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2003 Chevrolet Tahoe Question: 4 wheel drive front axle actuator, my front drive shaft turns all the time, normal ?



Visitor, Bay City, MI, April 13, 2010, 08:34

I had a lot of metal to metal front end noise and bound up in changing from 2WHI to 4WHI and my check four wheel drive light came on, I ended up changing a very bad front left wheel bearing, but I still feel like I am engaged in 4 wheel drive but not completely through the transfer case. could my front actuator be still engaged since my front drive shaft is turning in 2-HI I checked my neighbors 2009 and the front drive shaft does not turn in 2 Wheel Dr

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  • Answer #1

    April 15, 2010, 17:30

    As far as I know all shift on the fly 4wd system have the front drive shaft turning all the time. I have never heard of a case where the front differential is partially engaged. Is your service 4wd light on? If so please have the fault code(s) read and diagnosed in order to try and find our what he fault may be.

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    captnjred, April 15, 2010, 18:10

    I guess if the front wheel drive is turning all the time why do they have a front differntial actualtor on it, I understood and read somewhere ( I wish I could find it)it that you hit the button, to 4Hi and the main relay module gives a signal to transfer case actuator to shift the tranfer case into gear, once that shifts completely it hits the transfer switch that sends a signal to the front differntial actuator to shift, just like the older ones that had vacumn actuators on front, I wonder if mine isn't stuck in and causing the front drive shaft to stay actuated with the wheels but not the transfer case, I guess it is time to jack it up again, I will check fault codes and see what comes up, Thanks

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  • Medium-star Best Answer
    Visitor, July 12, 2010, 05:42

    The front axle actuator is on. Unplug it and see if that stops the drive line from turning. If not remove it then check the drive line again.

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