https://pedalcommander.com/products/pedal-commander-pc49-bluetooth?rq=yr_2015~mk_chevrolet~md_spark-ev~rk_lt~qj_ Very unsure of this but then digging around found this : https://madnessautoworks.com/2019-Tesla-Model%203/start-shopping-cid1/performance-upgrades-cid3/tesla-model-3-throttle-controller-madness-gopedal-bluetooth-pid11996 If the drive by wire system in the pedal is poindometer based , changing the resistance may or may not cause an error code but it’s an interesting topic. Does the Sport button in the Spark EV work on the same principal as the Pedal Commander ? Will OnStar bother me when I plug in one of the cheaper controller options. We will find out and we will make sure we document it. Stay safe during these times , hopefully everyone is well .