07 Caddy Escalade will not start. Will not click, will not begin to engage the starter. Here is where it gets weird. Daytime running lights do not come on, I can manually turn headlights on. Front power windows work, back do not. Gas gauge is not working, gear indicator is not working, radio and blower work. It's like I lost half of my electrical. I jumped engine and body ground to rule them out. Battery is charged, even hooked ot IP yo another running car.
Any ideas before I pull out a gas can and matches. Supposed to leave for Christmas vacation tomorrow.

Possibly ignition switch,but most likely BCM.

I retired from GM service back in 2010, but I recall that problem happening and seems to me it was always the ignition switch that was the culprit.

Cadillac, Cadillac, with I had my money back.......

quote:

Originally posted by dtye:
Possibly ignition switch,but most likely BCM.

that's also a good possibility!

Hey Cory...... Ignition switch is a good bet. But before you get to crazy, unhook both battery cables and hold cable ends together for a minute, It's referred to a cold relearn, something cheap and quick to try..........Howie

Something is going on with the underhood fuse block. Either a bad connection, wiring problem or something with the power feed to the fuse block.

Ignition switch was a no go.

Ignition switch really didn't make sense to me being that the dome light doesn't work and I would think that circuit would not run through the switch but it was a cheap try.

Cold relearn did nothing also

quote:

Originally posted by Woody B:
Something is going on with the underhood fuse block. Either a bad connection, wiring problem or something with the power feed to the fuse block.

I haven't been a GM tech in quite a few years but this is where I'd look. Turn the block over and see if there is corrosion or any melting of the plastic. see if you can find a power distribution wiring diagram.

I'm not a GM tech BUT I would check what EMAN and others have said.

https://www.youtube.com/watch?v=2wHdTHMhpDI

Check the connection for the BCM, they had a lot of problems with water intrusion, might be corrosion on terminals.

quote:

Originally posted by Eman:

quote:

Originally posted by Woody B:
Something is going on with the underhood fuse block. Either a bad connection, wiring problem or something with the power feed to the fuse block.

I haven't been a GM tech in quite a few years but this is where I'd look. Turn the block over and see if there is corrosion or any melting of the plastic. see if you can find a power distribution wiring diagram.

Occam's razor, the simplest solution tends to be the correct one. Some stuff is powering up, some stuff isn't. Quit guessing and check the power feeds. 99% chance the problem is related to the under hood fuse block or a power feed to the fuse block.
Like Eman I'm no longer a GM tech, but until 2016 I was a GM World Class Master Tech.

Ended up being the BCM. I checked everything I could. Had to throw in the towel.