Metra 70-2057 Amp Bypass Harness for Select Chevrolet GMC MOST Trucks 2014-2017

Metra 70-2057 is a factory amplifier bypass wiring harness for select Chevrolet and GMC trucks with MOST amplifier systems from 2014-2017. It bypasses the compatible factory amplifier during aftermarket radio installation while connecting at the original radio and amplifier locations.

Key Features

• Factory amplifier bypass harness for select Chevrolet and GMC trucks
• Designed for select GM vehicles with a MOST amplifier
• Plugs into the original radio connectors and the factory amplifier connection
• 72-inch harness length supports routing to the amplifier location
• Color-coded leads connect to the aftermarket radio without cutting factory connectors

System / Wiring Notes

• Factory subwoofer is not retained in select vehicles
• Designed for compatible MOST amplifier applications only
• Additional installation parts and interfaces may be required depending on vehicle equipment
• Verify amplifier type and current Metra fitment before installation

Vehicle Compatibility

Installation Notes

• Confirm exact vehicle fitment, factory audio system, and radio connector before installation
• Additional parts such as a dash kit, antenna adapter, steering wheel control interface, or data interface may be required for a complete installation
• Professional installation is recommended for best results
• Check current manufacturer instructions and vehicle application data before installation

What’s in the Box

• Metra 70-2057 amplifier bypass harness

Technical Specifications

• Brand: Metra
• Model: 70-2057
• Product Type: Amplifier bypass harness
• Application: Select Chevrolet and GMC truck aftermarket radio installations with MOST factory amplifier bypass
• Compatibility Type: Vehicle-specific
• Factory System: MOST amplifier applications
• Harness Length: 72 inches
• Factory Subwoofer Note: Not retained in select vehicles

Identifiers & Packaging

• MPN: 70-2057
• UPC: 86429305599
• Sold As: Each
• Included Components: Amplifier bypass harness

Why Buy From MCOR Automotive

• Authorized retailer for the brands we sell
• Specialists in vehicle audio integration, radio replacement parts, and installation accessories
• 22+ years of professional automotive electronics experience
• Expert support for compatibility verification and proper setup