Product Description
PSI Conversion 15-Pin 4L60E to 4L80E Plug-and-Play Adapter Harness – Gen IV LS
2006–2008 15-Pin 4L60E to 4L80E Conversion | Built for Gen IV LS Swaps & Upgrades
The PSI Conversion 15-Pin 4L60E to 4L80E Plug-and-Play Adapter Harness is the correct solution for upgrading from a 4L60E to a 4L80E transmission in 2006–2008 Gen IV LS applications. Designed to connect a factory 15-pin 4L60E harness directly to a 4L80E transmission, this adapter eliminates cutting, splicing, and unnecessary wiring modifications. Whether you're performing a full LS swap or stepping up to the strength and durability of a 4L80E, this harness simplifies the conversion while maintaining proper transmission connectivity. A custom ECU tune with a 4L80E transmission segment swap is required for correct operation.
Key Features & Benefits
- Designed for 15-Pin Gen IV Applications – Specifically engineered to adapt 2006–2008 15-pin 4L60E transmission harnesses to a 4L80E transmission without compatibility guesswork.
- True Plug-and-Play Installation – No cutting, splicing, or permanent modifications required. Connects inline between your existing harness and upgraded transmission for a clean install.
- Ideal for 4L80E Transmission Upgrades – Perfect for builders upgrading to the stronger 4L80E for improved durability in performance, towing, or high-horsepower applications.
- Factory-Style Connector Integration – Designed for use with factory-style 15-pin transmission connectors to ensure proper fitment and secure electrical engagement.
- Clean, Reversible Conversion Solution – Keeps your original wiring intact, making future servicing or changes straightforward while supporting proper transmission signal routing with correct tuning.
Notes & Installation Information
- Plug-and-Play Design – Installs without cutting or modifying the factory transmission harness.
- Custom ECU Tuning Required – A 4L80E transmission segment swap and proper calibration are required for correct transmission operation.
- Adapter Harness Only – Transmission, ECM tuning, and additional components are not included. Sold individually.
Key Fitments
- 2006–2008 15-Pin 4L60E Harness – Designed to adapt factory 15-pin 4L60E vehicle harnesses to a 4L80E transmission.
- 4L80E Transmission Upgrades – For Gen IV LS platforms stepping up to the stronger 4L80E transmission configuration.
- Gen IV LS Swap Applications – Ideal for performance builds requiring proper transmission connectivity during a 4L60E to 4L80E conversion.
