The dealer is installing the Kicker sub, which is Kicker part # SSUTAYU15, the 200W sub only. GM for some unknown reason will not release the rest of this system which is the PSUTA15, which adds the plug and play processor/amp from the SSUTAXXX. According to kicker tech support the proc/amp is 50w x 4, they recommend the KSC upgrade speakers to complete the Tahoe, so I'm doing that myself, I ordered the speakers, dynamite, and hushmat for all four doors from Crutchfield last week and they arrived yesterday. Also both Kicker and GM, as I have spoken to both last week cannot give a date for the release of the PSUTA15. Ugh ;( but the good news is Kicker told me they will sell the wiring harness and the 32 bit proc/amp separately so you can upgrade from the SSUTA to the PSUTA.....once GM releases it for sale