New here and need some help. ECM?

[Dirtymaxon4ds]

Alright guys I'm new here and wasn't sure where I needed
To post this.

I'm having issues with my 05 lly.
Was driving yesterday, head unit quit working interior lights started flashing
So I shut the truck off and wouldn't start back up.
Starts for a split second then turns right back off
Power seats work still but windows etc don't
And my edge insight won't read the computer. Keeps saying error
Could this be a bad ECM?

Thanks to whoever reads

 

[02greysixer]

I'd start by checking power and grounds at batteries and all other grounds. Also check fuses

 

[clrussell]

Check batteries as already said, is radio stock or aftermarket? Does security light flash when you start truck?

If aftermarket radio unplug it and the harness that connects to it and the dinger box. See if you're edge will read anything then.. Sounds like you have a module that shorted and shorted the can bus circuit.

Cig lighter fuse under hood is the one for your obd2 port. Which if your edge turns on then that fuse is good.

 

[Dirtymaxon4ds]

Thanks guys. It turned out to be a bad ground. Thanks for the help