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Anyone updated a 2016 Sierra to 2020 Sierra (Bose 7 speaker on both?) I am looking to update my 2016 SLT crew to a 2020 Denali, and want to confirm I am dealing with the same (or similar) animal.  The 2016 has PAC AP4-GM61,  old school PPI PC450 running 100x4 at 2 ohm, Infinity Kappa 60CSX component front, 62IX 2 way rear, Rockford Fosgate R500X1D running 500 watts at 2 ohms, and a sealed JL 10w1v3-4.  Embarrassed to say factory dash speakers, but you do not hear them except for a phone call... Incredible sounding system, but I do not want to have to do it again. Does 2020+ no longer use "MOST" bus communication? Anyone measure wattage from Bose?  Any difference between SLT, AT4, and Denali Bose amps?  Thanks in advance for your research assistance.

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