Just saw these posts, a bit late, but another '24 owner and I, with Denali and Bose, replaced the "A" Pillar and Dash corner speakers, with different brands to test. Mine : Kicker Tweeters in "A" Pillars, (left out the 6mfd. Cap crossovers on the stock Bose), and Pioneer Co-Ax A709 2.5" in dash corners ( also did not use a crossover). WOKE it up greatly. Left the center dash as is for now (blends both L&R channels.
He, @sswails, used Audio Frog speakers and tweeters in "A" Pillars and dash corners. After our lengthy comparisons, I consider him a very high end car audiophile.
NO distortion from these at all. BE Mind-full, to replace with the Lowest Ohm speaker available, for ANY replacement location. Dash OR Doors. This to keep the Bose Amp, at peak performance.
My Denali also has Tweeters in the top of the rear doors. Replaced them with Kickers as well. Now can hear those well.
Factory GM Kicker rear Sub kits..... (2) versions. Early one had a Remote Bass Control port on the Amp, and Flush White Molex Input Female for harness. Latter ones due to chip shortage ( a Kicker Tech explained), with a Pigtail input harness, does not have remote Bass knob option. This Kicker tech said , new production units, will resume the first version Remote Bass capability. Did not give a date.
Due to the GM Kicker Sub new non-Bass Remote, I got a Kicker "Hideaway 10", 46HS10, with built in 180 watt amp. Includes the Bass Remote knob and cable. Extremely compact. Tapped into under rear Passenger scuff rocker plate, next to seat. Easy access to BOTH twisted pair Yel & Yel/BK (goes to Right Front Door), OR the Gn/Bk & Bl/Gy (to Sub in centwe console). I put "T" Taps on all 4 wires to test.
So far testing the R.F. is OK. Will do the Ctr. Sub next. So far is great. The Remote Bass control pt is a Huge help, to fine tune it to every type of music. Also this Sub, has a continuously adjustable Crossover, Boost, Level. Has Hi/Low Speaker Source Level input, Phase / 180, Remote Turn On Type. All in $370.00. Enough Bass to vibrate the rear view door mirrors.
The "Hideaway"