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Where is the Onstar box located IN the 2021 Sierra?

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    • May 26, 2023 at 8:01 pm #762907
      MacDawn
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      Im curious where is the Onstar box located in my 2021 sierra?

    • June 8, 2023 at 8:50 pm #764882
      Parts Man1
      Participant

      I believe its under the dash on the drivers side..

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