OK, now I've got the new GM LS2 control harness plus their control for the 4LxxE series auto transmissions. Everything is fine except the trans. controller needs a signal from the throttle position sensor and LS2's don't have any since they are drive by wire.
Any ideas out there?

 

All right, after I read the instructions again, I found the answer. The eng. controller provides a signal at the "bulkhead connector" (purple wire).
Next problem is eng. speed signal which is provide at the same connector in a white wire which is called a 2 pulse per rev. tach. signal. Is this the same (2 pulse per rev) as you would get from the distributor connection in an older engine? Because this is what the trans controller instructions call for.

 

The white wire is the Tach signal from the engine. You need the VSS signal that comes from the tranny. It should be the brown wire in the bulkhead connector. You'll probably also need the MAP signal for engine load and that is the light green wire...