In this video I explain why your ecm/pcm is not communicating with scan tool or the ecm is not communicating with the tcm, bcm, abs module etc... If you're receiving U0001, U0010, U0100 diagnostic trouble codes this video may be useful.p
Great Tutorial... My 2010 Impala 3.5L has been having intermittent No Crank No Start issues the Usually begin with a Goofy Start (Starts after Returning from Crank Position to On Position) and soon after, warning Chimes, Service Everything Messages, Gauges go Crazy back and forth, Door Locks on/Off Constantly, Shifts get Rough BUt not Limp Mode and sometimes it actually goes into limp mode.. Once I shut it off for a while a No Crank No Start will happen... WOuld these issues be more BCM or ECM related?
It seems like every time I fix something 3 more problems show up. Now it seems I’m getting a hot to ground. A weird static coming thru my radio when it’s off. Getting very frustrated!