How do you fix ou100 on a 2007 malibu

Question

2007 malibu want start. Code reader reading code: ou100

Answer 1

U0100 Loss communication with ECM

 Loss communication with this type of code condition. the fuse has to be check , the IGN 1 fuse has to be check and needs to have power, there is also2 relay remove the PWR/TRNS relay and reinsert. if the engine start replace the PWR/TRNS relay