KHE
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C0306, C0321, C0327 Explained And Common Failures
KHE replied to carnau's topic in 1999-2013 Silverado 1500 & Sierra 1500
I have a 2013 Silverado that had the SERVICE 4WD SYSTEM MESSAGE when I start the truck. I have the C0306 code. I've verified a good ground at G110 (the frame by the body mount but you mention a bad head ground will cause this code. Where is the 'head ground" on a '13 Silverado? Thank you.
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