Random car shutting off issue...
Thread Starter
Melting Slicks
Joined: Apr 2005
Posts: 3,418
Likes: 1
From: Chicagoland Area IL
Random car shutting off issue...
As tittle says my 07 C6 has developed a random complete shutting or turning itself off. By complete I mean engine, radio, lights, everything while driving. It has happened at 80 MPH to idle, it always restarts immediately. Checked and no relevant codes via HP tuners.
* Does it with both key FOBs
* Checked obvious stuff like grounds and connections.
* No voltage issues and all appears fine.
* Engine fine with good trims.
I imagine BCM or some other module is getting ready to die. Has anybody run into similar issue and what was resolution?
Oh, I'm driving on sticky set of tires and haven't had tire monitoring system set to this set rims so I get the appropriate service XXXXX message, but that shouldn't be causing this issue because I've driven like that for many months.
Mike
* Does it with both key FOBs
* Checked obvious stuff like grounds and connections.
* No voltage issues and all appears fine.
* Engine fine with good trims.
I imagine BCM or some other module is getting ready to die. Has anybody run into similar issue and what was resolution?
Oh, I'm driving on sticky set of tires and haven't had tire monitoring system set to this set rims so I get the appropriate service XXXXX message, but that shouldn't be causing this issue because I've driven like that for many months.
Mike
Last edited by Skunkworks; Sep 20, 2010 at 08:55 PM. Reason: Typo
Thread Starter
Melting Slicks
Joined: Apr 2005
Posts: 3,418
Likes: 1
From: Chicagoland Area IL
Quick update...
Today finally got 2 meaningful codes via HP Tuners:
P1482 - (Immature)
U0073 - Control Module Communication Bus Off (Immature)
From code listing:
P1482 Cooling Fan Speed Output Circuit ECM (note fan is working and never got above 230ish when romping on it).
From google and dealership U0073 is a nebulous code that can be one of many things like gauge cluster and there are a few service bulletins.
I hope it's just a melted connector or even fan speed control module that is creating some sort of intermittent short or excess electrical noise. I'll look it over tomorrow when I empty garage out in order to be able to pull it in and jack it up.
Mike
Today finally got 2 meaningful codes via HP Tuners:
P1482 - (Immature)
U0073 - Control Module Communication Bus Off (Immature)
From code listing:
P1482 Cooling Fan Speed Output Circuit ECM (note fan is working and never got above 230ish when romping on it).
From google and dealership U0073 is a nebulous code that can be one of many things like gauge cluster and there are a few service bulletins.
I hope it's just a melted connector or even fan speed control module that is creating some sort of intermittent short or excess electrical noise. I'll look it over tomorrow when I empty garage out in order to be able to pull it in and jack it up.
Mike
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Mike
I had some very weird power issues and moved the main BCM wiring harness in the passengers foot well and have NOT had a simular issue in a LONNNNG time. Hopefully it was just a poor connection.
Give that a try and see if it fixes the issue. Move ONE thing at a time till you find a change. Move too many things and you will never know what caused the issues.
If I have further issues,, I will know where to look first.
BC
I had some very weird power issues and moved the main BCM wiring harness in the passengers foot well and have NOT had a simular issue in a LONNNNG time. Hopefully it was just a poor connection.
Give that a try and see if it fixes the issue. Move ONE thing at a time till you find a change. Move too many things and you will never know what caused the issues.
If I have further issues,, I will know where to look first.
BC
