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2022 Sierra Refresh Amp/subwoofer Install

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    • February 15, 2023 at 6:53 pm #747235
      lionsmane12
      Participant

      New to GMC jumped ship on Ford and I love my Sierra! The old style harness does not work anymore to install amp hi lo for a subwoofer, Help what can I use or where can I splice in on the refresh I do know the tuner is under the passenger side glove box I’m lost can’t find any literature online for the refresh on how to install sub and amp for NON Bose system

      • This topic was modified 1 year, 10 months ago by lionsmane12.
    • April 3, 2023 at 4:05 pm #754741
      mattmobley
      Participant

      Did you ever figure this out? Looking to install 2 10” subs and an amp in my 2022 Silverado refresh and was hoping to find some help online. Not looking too promising so far

    • April 25, 2023 at 8:45 am #757915
      bretkissick
      Participant

      I’m having the same issue. Want to install a sub in my (non bose) 2023 3500 sierra. I’m looking for the speaker wire colors.

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