2008 Escalade - rapid clicking no start

[swathdiver]

12.6-12.4 now that I've cranked it a bunch doing testing for voltage drops

That's getting low but not dead. Can you pull BCM codes yet?

 

[mikez71]

Did you try a new starter relay in the fusebox?

 

[Mordechai]

That's getting low but not dead. Can you pull BCM codes yet?

True but it did the same with a fully charged battery too. And no I haven't tried. Would I get a code for something like this?

 

[Mordechai]

Did you try a new starter relay in the fusebox?

Yeah swapped Relays around with no difference.

 

[swathdiver]

True but it did the same with a fully charged battery too. And no I haven't tried. Would I get a code for something like this?

I don't know but it is important to scan the entire system for codes. Not all codes set a CEL.

Did you watch the video @Fless posted in #14? If you have a corroded line, this could be why not enough voltage is getting to the start to kick the engine over.