ABS, no traction control and brake lights on after flash
Hey, 03 Buick Lesabre 3.8 v6, no mods. Flashed my pcm with a different idle and few other small things to check it worked. After reverting back to stock the ABS brake and traction control off light are on, no idea how to undo whatever I did. I have a backup but like I said reverting didn't undo it.Have only been writing calibration data if that matters.
Maybe try disconnecting the battery for a little bit.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
During the flash the PCM is disconnected from the bus, which typically will set all kinds of no comms codes in a bunch of other modules. Some platforms automagically change those over to history codes and turn the lights off as soon as everything is back up and running, some platforms don't and you have to go in and clear codes.
i usually flash in accessories mode not ignition as u then dont have all the modules on and bring up errors, if u can connect when in acc worth a shot for future
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