Find car audio that fits your 2025 GMC Sierra 3500 HD Denali

---

• Plug and Play T-harness for faster installation
• 31-Band graphic EQ
• Can be used with OE and aftermarket radios
• Settings adjusted via Bluetooth® in a smart device
• Designed for Ethernet amplifiers
• Independent high pass, low pass, and bandpass filters

•12" 4 ohms Loaded Vehicle Specific Stealthbox Subwoofer Enclosure with 2 12TW3 Subwoofer
• 800W RMS • For 2019-Up Chevrolet Silverado / GMC Sierra 1500 Crew Ca
• Replaces the lower cushion and storage unit

• 120 watts Peak Each, 50 watts RMS Each
• Compatible with select 2002-2025 vehicles from Ram, Toyota, GMC
• Silk Balanced Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohms
• Sensitivity: 83 dB

• Universal speaker harness for select 2010-2025 vehicles from Chevrolet, GMC, Buick
• Plugs into factory harness in dash
• Quick and easy installation
• No cutting needed

• 300 watts Peak Each, 100 watts RMS Each
• 6x9" Woofer and 2.75" Midrange
• Polypropylene cone material
• Impedance: 4 ohms
• Sensitivity: 84 dB
• Custom fit for select 2002-2025 vehicles from Toyota, Ram, GMC

• All-fiberglass, Sealed enclosure
• Mounts under the rear seat and requires no drill holes for installation
• Contains (2) 10TW3-D8 subwoofers in a down-firing sealed enclosure
• 800 watt power handling
• Will not fit Silverado "LD" models
• Delivers JL quality audio without compromising interior functionality

• Plug and Play T-harness for faster installation
• 15-band graphic EQ or 5-band Parametric EQ
• Can be used with OE and aftermarket radios
• Settings adjusted wirelessly from smart device
• Selectable high pass, low pass, or bandpass filters

• Amplifier Bypass Harness
• For 2014-Up GM MOST Vehicles
• Plugs into output of OEM amplifier harness (21 pin)
• 72 inches long
• Color coded leads

• Plug and Play T-harness for faster installation
• 15-band graphic EQ or 5-band Parametric EQ
• Can be used with OE and aftermarket radios
• Settings adjusted wirelessly from smart device
• Selectable high pass, low pass, or bandpass filters

• Speaker Adapter
• Made Specifically For 6x9" Speakers
• Designed For Select select 2014-2025 vehicles from GMC, Chevrolet Trucks

• Direct Connection to the factory harness
• Color coded wires for easy installation
• No cutting or splicing required

• Fits select 2006-2025 vehicles from GMC, Chevrolet, Cadillac Vehicles
• Fits 6" to 6.75" aftermarket speakers
• Step by step instructions
• Made with heavy duty ABS plastic

• Plug and play T-Harness allows for faster installation
• AXSUB-GM5 Interface and Bass Knob for subwoofer level control
• Micro USB updateable

• Fits 2019-up Chevrolet Silverado and GMC Sierra Double Cab Trucks
• Custom Hand-laid sealed fiberglass enclosure
• Loaded with two 12" SMW12D4 Subwoofers
• Installs quickly and easily under the rear seat

• Plug and Play T-harness for faster installation
• 15-band graphic EQ or 5-band Parametric EQ
• Can be used with OE and aftermarket radios
• Settings adjusted wirelessly from smart device
• Selectable high pass, low pass, or bandpass filters

• Speaker Adapter
• Made Specifically For 6"-6 3/4" Speakers
• Designed for Select select 2014-2025 vehicles from GMC, Chevrolet Trucks
• Color: Black

• Custom fit Dual 12" Ported Unloaded Subwoofer Enclosure
• Fits under the rear seat of 2019-2024 Chevrolet Silverado and GMC Sierra Crew Cab trucks
• Finished with premium carpet and a sleek vinyl insert
• Hand-assembled in the USA
• Illuminated etched plexiglass with RGB LED lights
• Bluetooth App for customizable lighting effects

• Plug and Play T-harness for faster installation
• 15-band graphic EQ or 5-band Parametric EQ
• Can be used with OE and aftermarket radios
• Settings adjusted wirelessly from smart device
• Selectable high pass, low pass, or bandpass filters

• ABS speaker adapter plates (pair)
• Speaker adapter harnesses (pair)
• Compatible with select 2007-2025 vehicles from GMC, Chevrolet Vehicles
• One convenient package to assist in replacing a pair of speakers
• Designed for installation of 6" to 6.75" speakers

• Plug and play T-Harness allows for faster installation
• AXSUB-GM6 Interface and Bass Knob for subwoofer level control
• Micro USB updateable