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Curtis Barnard

05 gmc Sierra traction control

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I have a 05 gmc Sierra that has a traction control button it's 2wd sle. It looks factory but I want to know if it is factory.

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Yes, it is a factory option. I only know this because I've seen it mentioned in the owners manual of those trucks numerous times, despite never seeing it in real life. So, it sounds like you have a rare combination.

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Check your rpo codes in the glove box. NW7 is the std traction control option.

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If the RPO code in the glove box says G80, that is a mechanical locking diff. There is no electronic locking diff option.

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