Gmc 2024 At4 Upgrades. Replaced all speakers (except dash mid range) installed jbl 8 channel amp with dsp, kicker amp with key feature wired at 1 ohm 500w (powering pioneer 8. Discuss all gmc 1500 at4 modifications including engine, drivetrain, exterior, electronics, etc.

Starting to see the light at the end of the tunnel for moving forward with the performance upgrades as i am running out of aesthetic upgrades hahaha. The mods have started and will probably never end.