Had a battery suddenly die. Was playing with pilot timing/fueling to get the rattle to go away and on the third flash after it finished, I killed the ignition and shit started going wonky. Bcm was clicking, dash lights doing weird shit, so on. Thought I killed the ecm. Checked over a whole bunch of crap and then put a vilt meter to the batt with it disconnected. 12.5 volts. Ok, must be good. Hook it back up and start testing fuses. Only had a volt meter so I test the main ones and they all are at 6 volts. Wtf?. Ok, has to be the battery. Change it out (still under 3 year free replacement warranty, had 2 weeks left :rofl
and started right up. Not gunna lie, thought I screwed something while flashing and bricked some computers lol.
Running one battery, it’s literally every 3 years within a couple months, I need a new one. Least this was within warranty