Where is the Onstar box located IN the 2021 Sierra?

This topic contains 1 reply, has 2 voices, and was last updated by Parts Man1 1 year, 3 months ago.

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