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4wd service light

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Old 03-29-2007, 06:37 PM
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Default 4wd service light
In my 00 GMC Sirra the 4wd service light came on. What do I do about it?

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Old 03-29-2007, 08:15 PM
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find out what code you have stored in the transfer case control module. you cant really do anything till you find that out.
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Old 03-30-2007, 01:35 AM
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I was told it was a front axle acuator(sp). Around $230 w/ labor. I can't find my hptuner cable (brother hid it) so I can't read my codes just yet. Will get it cleared up tomorrow.

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Old 10-12-2007, 04:09 PM
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What ended up happening with this? Mine is doing the same thing.
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Old 10-14-2007, 01:16 PM
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is this fairly comon in these. Same light in my my 78k 99 sierra


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Old 10-14-2007, 05:12 PM
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This happened to me once, and it was just the switch in the dash. As said before, you really just need to read the trouble code to know exactly what it is.
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Old 10-15-2007, 12:36 PM
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I Have had the same thing, several places I looked all said probably the switch, so if you don't have any codes look into a switch...
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Old 10-15-2007, 03:08 PM
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Mine was doing that. I took the switch out, and popped the switch housing apart. I could see the solder on the backs of the switches was broken, so I just re-soldered them. Ta-da! Like new.
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Old 10-17-2007, 10:45 AM
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Originally Posted by N4cer
Mine was doing that. I took the switch out, and popped the switch housing apart. I could see the solder on the backs of the switches was broken, so I just re-soldered them. Ta-da! Like new.
Cool beans! But does anyone know how much a new switch would be?
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Old 10-17-2007, 11:06 AM
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Originally Posted by pantz28
Cool beans! But does anyone know how much a new switch would be?

15709327 is the part number. Usually set a B2725 in the TCCM
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