So, as the title says I am looking for the PID to command tap-shift up/down. I have a Silverado 2500HD engine/trans (Ly6 engine & 6L90e trans) in my KIA Sorento. I used HPTuners to get everything up and running. After browsing TONS of threads about using Tap-Shift I found that there aren't many options. I either have to get a BCM from a Silverado.. This may or may not work because I haven't looked into any issues resulting in trying to ONLY use the BCM for the tap shift driver. OR option 2 is to reprogram the TCM as a Corvette 6L90 and use the 1 wire shift setup. However I have read countless threads about people having issues with this method. I don't know if there is a true solution for doing the Corvette reprogram.
So here is what I was thinking... I have a Arduino with CAN-BUS shield. I can read and send messages with the shield. I am trying to find out what the shift up/down message is that is sent from the BCM to the transmission. If I can find this out then I think I can mimic this message with the Arduino there by controlling tap shift simply with a cheap solution. Also the Arduino can pull any PID I choose and log it or display it on an external LCD. Great for any kind of gauge or data display (current gear for example)
I know this is a LOOOONG shot but perhaps there are some other members on here that play with Arduinos... Or even someone in Northeast Ohio that can let me pull CAN messages with my setup while they drive and use tap shift. This would allow me to "hijack" the PID messages.