• Metra 70-1855 Tuner Bypass Harness for Select GM Vehicles 1985-1994
  • Metra 70-1855 Tuner Bypass Harness for Select GM Vehicles 1985-1994 - product image 2
  • Metra 70-1855 Tuner Bypass Harness for Select GM Vehicles 1985-1994 - product image 3
  • Metra 70-1855 Tuner Bypass Harness for Select GM Vehicles 1985-1994 - product image 4
  • Metra 70-1855 Tuner Bypass Harness for Select GM Vehicles 1985-1994 - product image 5
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Metra

Metra 70-1855 Tuner Bypass Harness for Select GM Vehicles 1985-1994

Metra 70-1855 Tuner Bypass Harness for Select GM Vehicles 1985-1994

$36.99 USD
$36.99 USD
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Before you order

Buy with the right details confirmed

Review the application and system requirements

Confirm the size, power, connections, and included or separately required parts described on this page.

Metra 70-1855 is a tuner bypass harness for select Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac vehicles from 1985-1994. It provides a tuner bypass connection for compatible GM vehicles that require bypassing the factory tuner location.

At a Glance

  • Tuner bypass harness for select GM vehicles
  • 5-foot harness length supports routing to the tuner location
  • Designed for compatible Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac applications
  • Supports aftermarket radio installation where a factory tuner bypass is required
  • Helps avoid cutting factory wiring when matched to the correct application

System / Wiring Notes

  • Verify factory tuner configuration before installation
  • Additional dash kit, antenna adapter, or interface parts may be required
  • Vehicle fitment varies by model and factory audio system

Exact Vehicle Compatibility

Find your vehicle below, then match the model year and factory-equipment details in the same row. Factory radio, amplifier, navigation, trim, speaker location, and connector differences can change which installation parts are required. If anything differs, contact MCOR before ordering.

Make Model Years Factory Equipment / Qualifier Application
Buick Regal 1988-1994 Factory amplified audio system Factory amplifier bypass harness
Buick Regal 1988-1994 Non-amplified factory audio system Radio wiring harness for non-amplified system
Chevrolet Blazer 1992-1994 full size; Non-amplified factory audio system Radio wiring harness for non-amplified system
Chevrolet C/K Pickup 1988-1994 Non-amplified factory audio system Radio wiring harness for non-amplified system
Chevrolet Corvette 1990-1993 Non-amplified factory audio system Radio wiring harness for non-amplified system
Chevrolet Suburban 1992-1994 Non-amplified factory audio system Radio wiring harness for non-amplified system
GMC C/K Pickup 1988-1994 Non-amplified factory audio system Radio wiring harness for non-amplified system
GMC Suburban 1992-1994 Non-amplified factory audio system Radio wiring harness for non-amplified system
GMC Yukon 1992-1994 Non-amplified factory audio system Radio wiring harness for non-amplified system

Fitment note: Year and model alone are not always enough to confirm compatibility. Match every factory-equipment qualifier shown for your vehicle, and contact MCOR Automotive if the radio, amplifier, navigation, speaker, camera, trim, or connector details are uncertain.

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 70-1855 tuner bypass harness

Technical Specifications

  • Brand: Metra
  • Model: 70-1855
  • Product Type: Tuner bypass harness
  • Application: Select Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac tuner bypass radio installations
  • Compatibility Type: Vehicle-specific
  • Factory Feature: Tuner bypass
  • Harness Length: 5 feet

Identifiers & Packaging

  • MPN: 70-1855
  • UPC: 086429105175
  • Sold As: Each
  • Included Components: Tuner 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
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