2007 Yukon died while driving. Found harness unplugged but cannot find where it plugs into!

[07DenaliChi]

seems awfully wierd that it would have the harness and no module if you ask me

I’m thinking the same….

 

[Doubeleive]

If your 07 is a Denali (which your screen name implies), do you still have the OEM Z55 air and electronic suspension (shocks), or did you or a previous owner convert to a passive system? In your first photo, I do not see the electronic suspension controller, and that plug looks like the plug that connects to that controller.

not unless it is 100% identical to a fuel control module, look at the pins i pictured

 

[j91z28d1]

do you have a fuel pump relay in the box under the hood? I believe if it has one, it's old style return system. if it's empty it's the returnless with the modual?

 

[mikez71]

Here is a suspension module pic...

https://i.ebayimg.com/images/g/~osAAOSwa6xlstNd/s-l1600.jpg

Looks identical at first and second glance... 15 pins across long row..
two little grooves each side, two larger grooves in middle with three slots under them..
I think Joseph nailed it..

Maybe batt cable/ground issue that seems to be somewhat common?

 

[j91z28d1]

Here is a suspension module pic...

https://i.ebayimg.com/images/g/~osAAOSwa6xlstNd/s-l1600.jpg

Looks identical at first glance...
Think Joseph nailed it..

this is the only thing that makes sense and doesn't the can bus go down if it's unplugged? seems there's a South main auto video on it?

 

[Doubeleive]

if it turns out you do need one and grab a dorman I would grab some crc contact cleaner and a can of compressed air and clean up that harness I see a little corrosion on there and that is a known issue for these trucks becuase they get exposed to the elements, so clean that up and then tuck it up under there as high as you can get it.

 

[Joseph Garcia]

Still with the OEM suspension never fixed it. Dealer quoted $1700

OK, but I still do not see the electronic suspension controller in your photo. It sits right on top of the frame rail. About 4" wide by 10" long and about 1" thick.

 

[Doubeleive]

they both look the same bizzare

 

[07DenaliChi]

Does that suspension control module have anything to do with the no start issue?

 

[Doubeleive]

Does that suspension control module have anything to do with the no start issue?

it could if it interupts the lan bus as noted already, leaving a open circuit
I would look up under there a little closer, maybe the suspension module fell off then