Question about 1999 Chevrolet Silverado 1500

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Service 4WD LIGHT IS ON

MY 1999 CHEV. SLVERADO SERVICE 4WD WARNING LIGHT IS ON. SERVICE COMPLETED NOW HOW DO I RESET??

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  • MAVDOG40 Oct 17, 2008

    I COULDN'T LOCATE ANSWER IN OWNERS MANUAL AS SUGGESTED. I NEED TO RESET SERVICE CODE FOR 4WD TO GET LITE TO SHUT OFF

  • m4mah Oct 22, 2008

    4WD Service Light comes on at random times.

  • craigwhitney Feb 21, 2009

    my 02 chevy "service 4wd" light comes on randomly. recently serviced how do i reset?

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I have a 2002 chevy trailblazer LT 4.2 l w/ approx 85000 miles on it and I left key in car after rolling down windows for about 2 hours drainging battery. After charging battery and running car for a little bit the service 4 wheel drive light came on. I have had no problems with the truck and I am wondering if it is because the battery was drained and the computer needs to be reset or something?

Posted on Sep 06, 2010

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  • Chevrolet Master
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It is in the owners manual, do you have one?

Posted on Oct 17, 2008

  • yadayada
    yadayada Oct 18, 2008

    You will get no more free help, no one will touch this when you rated me a zero thanks for trying.

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Have a 2004 Chevrolet Silverado and all of a sudden the Service 4WD message started appearing. Don't use 4WD and do not understand why light came on. Seems to reset after I turn vehicle off. I am going to disconnect battery and see if this causes electronics to reset; what do you think?

Posted on Jul 27, 2009

There is a 4wd actuator motor that bolts onto the transfer case. you have to drop the rear axle shaft to get it it out. there are only 3 bolts that hold it and 2 plugs. make sure when u replace it that u do not put the truck into 4wd until after u have the code cleared.

Posted on Oct 22, 2008

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How to reset the 1999 silverado 4wd light


I don't know if there is any way to reset the service 4wd light but I do know what may have caused it. On my 99 silverado, the 4wd buttons in the dash were the problem. What happens is the solder joints become cracked and thats what triggers the alarm. If you want to, you can take it out and inspect the joints and possibly re-solder them depending on how comfortable you are with it. They may really tiny cracks that are hard to be seen with the naked eye.
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Service 4wdrive


Unfortunately You need to read the codes for the Transfer Case Control Module. The Diagnostic codes will help you in the direction to repairing this problem. The switch light goes out when there is a problem and the Transfer case switch is disabled.

Thank You,
Roy

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