Question about 1999 GMC Sierra

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4wd does not work iv changed the 4wd switch but still does work and on the 4wd switch none of the lights come on to tell you if you are in 2wd or 4wd hi or low

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The switch is probably from a newer modle truck, although they work the indicator lights don't always work, and check the 4x4 fuse in the fuse panel on the left side of the dash by the drivers door

Posted on Jan 03, 2011

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