The LS3 Wire Harness Produced By Speed Scene Wiring

Welcome to the LS3 wire harness, built by Speed Scene Wiring, Made U.S.A. The LS3 engine wiring or as many call it, LS3 engine management system requires solid integration with the GM LAN, and all associated computers. The LS3 harness will support active fuel management, giving you the full access to every option that GM has engineered.

With every fly-by-wire LS3 harness we build, we supply the pedal harness. If you have the pedal, we will need it to test your application upon completion. If you are in buying a new accelerator pedal, always stick to the exact year, make and model the engine came out of.


Transmissions are used with the LS3 wire harness. The 4L60E, 4L80E, 6L80E, T56, 700R4, any STD trans. Special programming and additional computers are required, depending on transmission, please inform us which one you are running.

GM LS3 Tuning

All GM engine fuel management computers need re programming and re mapping. We handle programming parameter changes you have made, as well as removing anti-theft and other body programs still in search of linking the LAN with the ECM. The LS3 engine isĀ  found in vehicles 2008-2011. LS3 Vehicle applications are as follows:

  • Z28 Camaro SS LS3, 2010-Present
  • Chevy Corvette LS3 2008 to Present
  • Holden HSV LS3 2008 GTS.
  • Tune required for ECM, TCM,
  • Pedal Required

Ending Note

Price below is for any GM auto transmission your environment requires. One simple price.