“Will this work for 2007 sierra classic 1500 with Bose system and OnStar?”

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• This is not the correct harness for your 2007 Sierra Classic, you would need the RP5-GM11. https://www.bestbuy.com/site/pac-radiopro5-radio-replacement-interface-for-select-general-motors-vehicles-multi/3844378.p?skuId=3844378

  Answered by AAMP Global 4 years ago

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