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Sierra 2500 - Bypass OEM Amplifier - Add an Amplifier interface
Bypassing the factory amplifier is a more difficult undertaking but provides the best sound quality gain. When bypassing, it takes a more work because you have to run the bypass harness to the factory amplifier, which is often located in some other part of the car. Bypassing the factory amplifier will require an aftermarket amplifier or using the aftermarket radio's internal amplifier.
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PAC LPHGM71 2019 - and Up select GM LocPro Advanced T-harness for vehicles with non-BOSE sound systems$64.99- Designed for 2019 - and Up select General Motors vehicles
- Provides plug-n-play audio output connections from the factory radio without cutting factory speaker wires
- Easily add amplifier to an existing audio system and use the factory radio without cutting factory wiring
- Saves time by quickly utilizing the original speaker wires
- Plug and Play installation
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