I'm trying to help a guy out with a 2015 L83/8L90 swap in a 67 C10. The engine, transmission, wiring harness, computers (E92/T87) and tuning all came from swapsupply in Houston. The truck starts fine and engine will REV when you move the gas pedal while in P/N. If you put it in R or D, you get zero response from the throttle body. It is going into gear as the truck will move forward and backward, but it is at idle RPM. If you put it back in P/N the throttle body works with pedal movement. This has occurred with 2 different pedals. The ECM is not throwing any codes. I hooked my scanner up and while in P/N you can see the pedal % and the TB % move. When in any other gear, you can see the pedal % move, but the TB% doesn't change. Right after that I determined that the battery has a bad cell, so I can't do any more troubleshooting until I get a replacement. Any thoughts as to what's going on? TIA.
Rob
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