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4L60e to 4L80e with VSS Transmission Adapter Harness
(99-06 Sierra 1500
Item S576734
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Product Information
Features, Description, Q&A
Features
- 4L60e To 4L80e Plug-And-Play Adapter
- Includes Two Components: Adapter Harness And Input Speed Sensor Connector
- Adapter Harness Converts Existing Transmission Plug And Wiring To 4L80e Configuration
- Input Speed Sensor Connector Runs From Front ISS Sensor To ECM
- Provides Correct Signal To ECM For Transmission Operation
- Requires ECM Flash With Proper Calibration For 4L80e Transmission
- Blue Wire Connects To Pin 23
- Red Wire Connects To Pin 22
- Fits 99-06 Sierra 1500
Description
Transmission Conversion Adapter. The 4L60e to 4L80e with VSS Transmission Adapter Harness facilitates a seamless conversion from a 4L60e transmission to a more robust 4L80e unit. It ensures proper electrical integration by adapting the existing transmission plug and wiring to the 4L80e configuration while delivering accurate input speed sensor signals to the ECM. This harness is essential for upgrading your transmission with minimal wiring changes.
Construction and Appearance. Built with high-quality wiring and connectors designed for automotive environments, the adapter harness features durable insulation and a precise plug-and-play design. These qualities help minimize installation errors and provide reliable electrical contacts for long-lasting performance.
Installation. Installation requires no cutting or drilling, as this harness is designed for plug-and-play use. It simplifies the wiring connection between the transmission and ECM, making it suitable for both automotive enthusiasts and professional mechanics.
Application. Specifically designed to fit 99-06 Sierra 1500.
CA Residents: 
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