This will be my first video of three parts, going over the harness rework steps for a 2003 5.3L vortec engine. In part 1, I will depin unused wires from the PCM as well as identify wires that will be used in the fuse block, or connected elsewhere in the target vehicle. This process will be nearly identical for any 2003-2007 Gen 3 engine with electric throttle control, with 4L60E or 4L80E trans. For more wiring details, please visit my website, www.lt1swap.com
Download Printable PDF Files of the pin outs I use from my website here:
http://www.lt1swap.com/1999-02pcmpinouts.pdf
http://www.lt1swap.com/2003-07pcmpinouts.pdf
http://www.lt1swap.com/2003to2007schematics.htm