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Old 05-31-2014, 07:13 PM   #1
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Default Service 4WD light

I have a 2004 Chevy Silverado Z71. The Service 4WD light came on a little while ago and hasn't gone away. I've replaced the control module under the dash and the switch. Only thing I can find to do now is go somewhere to have the codes looked at. One thing I can't find is where to have them read. Any suggestions where I can go? I'm trying to keep the truck out of the shop.

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Old 06-01-2014, 09:58 AM   #2
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does yours have traction control? if so turn it off then drive around a few minutes shut the truck off then start back up that may fix it. did with my wifes. i think that traction control is a crappy design it'll get you stuck in your driveway.
any way. just an option.
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Old 06-01-2014, 10:18 PM   #3
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No, it doesn't have traction control
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Old 06-02-2014, 08:27 AM   #4
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any scanner that is capable of body codes. does it work?
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Old 06-02-2014, 09:14 PM   #5
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There'* no code to read
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Old 06-03-2014, 08:14 PM   #6
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If the light is on there is a code
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Old 06-03-2014, 08:17 PM   #7
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Then where do I read it? There'* nothing on the OBD 2. Tried that already
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Old 06-03-2014, 08:22 PM   #8
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Are you using a scanner like a tech 2 that specifically says reads gm body codes?
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Old 06-03-2014, 08:24 PM   #9
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It'* not specifically for GM but it does read GM codes
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Old 06-03-2014, 08:31 PM   #10
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Has to say go body or chassis codes specifically
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