Will LS3 engine harness work on an LS2?

[rfrankb4]

I do not know the answer to this question but if you are modifying the harness already it should not matter much. Any connectors that are different you can get from:

http://www.eficonnection.com/eficonn...ngineType.aspx

or ebay and swap them over. If the computer is the same you would just then need to get it flashed with the program from whichever set of sensors you end up using.