my 2015 malibu ent threw some flood water it shut off but it sounds like it need
a boost but hen i did it did not crank hats the problem
Get all the water out of all the computer modules, fuse block, power dist. center, etc. Check the batter is still good. Check and/or replace any blown fuses and fusible links. Check the mega fuse. Check your relays, esp. starter relay. Check for power to/from ignition module.
Ok I will do that tomorrow and I’ll will come back for my results