I have a customer who's doing a 5.3 swap into something and dropped off his ECU for a bench flash to get it going. On the notes left with it one of the items says he has as drive by cable throttle body.
Looking at ECU I see electronic throttle control options. However I know those options often exist in the ECU even if the car wasn't ETC from the factory. So how do I know if it was in use in stock form or what to change? if anything? I'm not exactly up on my Chevy Express Vans lol
2003 Chevrolet Express 3500, 6.0 L, 8 Cyl
P59, GM Gen3 V8, 4.3L V6
OS 12579405
Thanks
Malcolm