4wd switch not lighting up and no service 4wd light coming on either

By Gmcgirl86
February 23, 2016 in 1999-2013 Silverado 1500 & Sierra 1500

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Gmcgirl86

Posted February 23, 2016

We just bought a 01 GMC Sierra side step. The guy we bought it from said the switch was bad and so we changed it and it is still doing the same thing. I am thinking its the tccm BC we have checked fuses, changed the switch, check ground wires, and even found a chewed through wire and reconnected it. Thoughts??

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