• Model: AP4-GM71
• Application: 2019–2024 Chevrolet and GMC vehicles equipped with Bose premium audio systems (IOS, IOT, IOK infotainment platforms)
• Type: 4-Channel amplifier integration interface with pre-amp outputs and digital audio support
• Compatible Systems: Factory Bose-equipped vehicles (non-Bose systems not supported)
• Outputs:
• 6-channel RCA pre-outs (Front L/R, Rear L/R, Center, Sub)
• 5 V RMS output (switchable to 4 V)
• Optical TOSLINK 2-channel digital output
• Remote Turn-On: Data-controlled output (2 A max)
• Non-Fading Channels: Center and Sub outputs remain non-fading and include a remote level control knob
• Retains Factory Functions: Maintains Bluetooth audio, OnStar, navigation prompts, door chimes, and warning tones
• Control & Configuration:
• PC-based AmpPRO App for 3-band EQ, minimum volume, and chime volume adjustment
• Firmware-upgradeable via USB
• Installation:
• Plug-and-play T-harness connects at factory amplifier location
• Factory amp must be disconnected
• No re-flash or coding required
• Build Quality: OEM-grade harnessing and sealed connectors
• Operating Voltage: 9 V – 16 V DC
• Output Impedance: 47 kΩ
• Dimensions: Compact control module w/ mounting tabs (approx. 5″ × 3.5″ × 1.25″)
• Warranty: 1 Year Manufacturer Warranty
Included in Package:
• AP4-GM71 interface module
• T-harness specific to 2019-2024 GM/Bose vehicles
• Remote level control knob with 16.5′ cable
• Mounting hardware and user manual
The PAC AP4-GM71 AmpPRO 4 provides a simple, plug-and-play solution for adding aftermarket amplifiers to 2019-2024 GM vehicles equipped with Bose audio systems. It delivers clean 5 V pre-amp outputs, full-range digital audio via optical TOSLINK, and maintains factory chimes, Bluetooth, and safety alerts without the need for re-flashing or signal summing.
