Question about 1999 Chevrolet Blazer

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1999 chevy blazer won't shift into 4wd

Electronic 4wd. The light blinks indicating its trying to engage, but it won't. Just started doing this today.

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  • matthewandjo Jan 28, 2009

    When I push the 4HI button on the 4wd indicator switch(mounted in the dash) the light blinks then stops and the 2HI light come on. It just started doing this this morning durning a snowstorm of all great timing. I do hear a click come from under the dash on the passengers side.

  • matthewandjo Jan 29, 2009

    Took it to a shop, it took them over an hour to find the problem. The actuator. Its gonna cost me $389.60 to have it fixed. Thanks for the effort.

  • Matthew Brandenburg May 11, 2010

    you are in neutral when trying to engage 4wd correct?

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  • 39 Answers

First try to disconnect the positive battery cable for 30 mins. This is the way to clear the TCM which is were the clicking is probably coming from. I hope this helps.

Posted on Jan 29, 2009

  • sickforvws
    sickforvws Jan 31, 2009

    I just fixed mine. It was'nt the actuator, but it was a vacuum hoses. They looked got until I touched them. Then they crumbled. Cost me $2, but the fix was priceless!

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