Product Description
PSI Conversion 13-Pin 4L60E to 4L80E Plug-and-Play Adapter Harness – Gen III LS
1997–2005 13-Pin 4L60E to 4L80E Conversion | Ideal for Gen III LS Swap & Transmission Upgrades
The PSI Conversion 13-Pin 4L60E to 4L80E Plug-and-Play Adapter Harness is the clean, professional solution for upgrading from a 4L60E to a 4L80E transmission in your Gen III LS application. Designed specifically for 1997–2005 13-pin 4L60E harnesses, this adapter allows direct connection to a 4L80E transmission without cutting or modifying your factory wiring. Perfect for LS swaps and heavy-duty transmission upgrades, this harness simplifies the conversion process while maintaining proper transmission connectivity. A custom ECU tune with a 4L80E transmission segment swap is required for correct transmission operation.
Key Features & Benefits
- True Plug-and-Play Design – Engineered to connect a 13-pin (1997–2005) 4L60E harness directly to a 4L80E transmission with no cutting, splicing, or permanent modifications required.
- Perfect for Gen III LS Swaps – Ideal for builders upgrading to the stronger 4L80E transmission while retaining their existing 4L60E vehicle harness in Gen III LS platforms.
- Factory-Style Connector Compatibility – Designed for use with factory-style 12-pin transmission connectors to ensure secure engagement and proper electrical interface.
- Clean, Serviceable Installation – Keeps your wiring intact and reversible, making future service or changes simple without damaging your factory harness.
- Built for Proper Transmission Connectivity – Ensures correct signal routing between your existing harness and upgraded 4L80E transmission when paired with proper ECU calibration.
Notes & Installation Information
- Plug-and-Play Adapter – No cutting or modification of the factory harness is required for installation.
- Custom Tuning Required – A 4L80E transmission segment swap and proper ECU calibration are required for correct transmission function.
- Wiring Reference – Tan wire connects to Pin 22 in the C2 (Red) connector. Orange wire connects to Pin 23 in the C2 (Red) connector.
- Adapter Harness Only – Transmission and ECU tuning are not included. Sold individually.
Key Fitments
- 1997–2005 13-Pin 4L60E Harness – Designed to interface factory 13-pin 4L60E vehicle harnesses with a 4L80E transmission.
- 4L80E Transmission Upgrades – Ideal for performance and heavy-duty transmission swaps requiring a stronger 4L80E unit.
- Gen III LS Applications – Commonly used in LS swap projects retaining a factory-style 4L60E harness while upgrading to a 4L80E transmission.
