Question about 2005 Chevrolet Tahoe

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How to reset Service 4wheel drive warning light on 2005 ChevTahoe

I replaced the transfer case fluid and tried to reset the Service 4wheel drive warning light, the same process of resetting the oil life. Somehow ,Im still getting the Service 4wheel drive light appearing on my console.

Is there any different way to reset the Service 4wheel drive light? Can I reset the warning light by disconnecting the negative cable on my battery?

Please advice or any info you can forward will be greatly appreciated. Thanks.

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  • Anonymous Mar 12, 2014

    service 4wheeldrive message light came on once, no lights on control panel, replaced control panel. no power to transfer case, replaced computer control module, still no power to transfer case, no 4wheeldrive.

  • Anonymous Mar 30, 2014

    "Service ride control " came on after a visit to the tire shop for winter tire re&re.

    Tired of major mechanical expenses at GM service Center.so have been online ; checked all fuses, ALC relay . Even had battery disconnected for 30 mins ?

    Still have warning message as well as a kind of heater fan-like noise faintly heard from driver's seat !
    Is this unit safe to drive whilst I explore my options further ??

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I have a 2005 Tahoe that recently had a similar problem. To resolve, I did the following.

  1. Change the transfer case fluid (Which you already did)
  2. Change Gears to 4L while in neutral, change back to drive, and drive slowly 50 yards or so.
  3. Change Gears to 4H while in neutral, change back to drive, and drive slowly 50 yards or so.
  4. Change Gears to 2H while in neutral, change back to drive, and drive normally for a couple of miles.
This will cycle the fluid within your transfer case, and hopefully clean out the sensor. I did this, and my Service 4WD light went away after one day of normal driving. Hope this helps. Note: When I went into 4L the first go around, it had a hard time shifting due to non use. I changed between 4H and 4L a few times until it got smoother.

Posted on Mar 30, 2009

  • eric small
    eric small Feb 09, 2014

    Would this work on a 2002 trialblazer with the same problem?

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Every gm truck/suv that is four wheel drive between 2000-2007 has a tranfer case pump casing defect the pressure plate does not sit tightly in the housing causing it to wear a hole in upper part of the transfewr case that only leake when your driving and you will not notice unless you look on top for fluid thats soaked in dust and dirt merchant automotive has a upgraded pressure plate that sits tightly in the housing fixing the problem

Posted on Nov 02, 2012

  • crusadesofbl
    crusadesofbl Nov 02, 2012

    every gm truck/suv that is four wheel drive between 2000-2007 has a tranfer case pump casing defect the pressure plate does not sit tightly in the housing causing it to wear a hole in upper part of the transfewr case that only leake when your driving and you will not notice unless you look on top for fluid thats soaked in dust and dirt merchant automotive has a upgraded pressure plate that sits tightly in the housing fixing the problem

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I had the same problem and the Chevy Dealership had to replace my 4X4 encoder box...cost was about $324.00 with labor and all.

Posted on May 04, 2009

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