What is your battery voltage ?

 

I will check when I get home from work, but I just replaced it in 2021. Several of the other forums have suggested low or dead cell battery as cause.

 

My STS used to throw Service Traction/Stability warnings a lot in the Winter, upon Start Up. A scanner would one show a Code of one of the Rear Calipers being slow at retracting. I ignored it

 

I would still put a Voltmeter on the Battery to see what Voltage is has, running and Not running.

 

Checked the battery first thing this morning. 12.4V not running. 15V with car running. Drove around the block and didn't get the "Service Stabilitrak" message this morning. Temps are a bit warmer (70 degrees) and real humid. It seems to happen more regularly when the temps are colder.

 

I had this exact same issue on my 2013 CTS Premium ~2 years ago. I got the TC, ABS, Brake lights as well as "service power steering". At the time, the EBCM was not available for my car... the dealer told me I could just have it back as-is and drive it without ABS, lol. I did some research and found on the CTS V forums that people had been getting the same issue and had been solving with using used ECBMs. I told the dealer this, and they told me that it wasn't possible to use a used part due to the VIN being coded onto parts. I pressed the dealer and the master tech finally disclosed that GM didn't start VIN coding until 2014 or 2015, I forget which year he said- but either way, the used part worked for me with no issues. It's been 2 years and it's running fine. The SRX may be different, I don't know, but it's worth pressing the dealer over using a used part imo.

I also recall the codes pulled reflected no communication between the ECM/ECBM- I believe it was U0100, but I could be slightly off. I had them check for a bad ground, but it ended up being the ECBM.

 

I started getting the dreaded 'Service Stabilitrak' message on my 2011 Cadillac SRX dash. It also shows ABS, Traction Control, and Break indicator lights. This happens intermittently, usually when I first start up in the morning and start driving. If I sit and let the car idle for a few minutes it doesn't happen. Just when I pull out of my driveway and start down the street. (I've read that the EBCM performs a self test at 3mph after startup) Had the codes pulled and the C056D-00 ECU Hardware Malfunction is listed.

I talked with the local Cadillac dealership and they informed me the EBCM is obsolete and cannot be purchased. They said they have to pull the existing EBCM, send it to Canada for reconditioning, and reinstall it on the SRX. $1500 repair job. I've also read that the EBCM is programmed to the specific VIN of the car and that used ones cannot be interchanged, only new ones can be programmed to the car's VIN. Which, I'm assuming, is why Cadillac needs to pull the old one and get it reconditioned.

I'm just reaching out to those folks who own a 2010-2016 Cadillac SRX to see if you have had similar issues. And what the resolution is. This all kind of makes sense to me but need some confirmation from those with past experience or direct knowledge.
Thanks for the help, Lynn

I have a 2015 SRX. Exact same set of warning lights, same problem. Happened a couple of years ago. Had to wait several months for the dealership to get the EBCM. I think I paid around $1200.00 for the fix. Also I was never able to get a definitive answer from my insurance company )USAA) on my coverage if I was involved in an accident with anti-skid inop. VIN programming is correct. Good luck!

 

Your battery sounds weak. Unless you're totally strapped I'd replace it. 5 years is a pretty good run. For what it's worth I don't trust anyone but myself to test a battery. Most auto parts employ kids who don't stick around for long. They may or may not be able to accurately test a battery. I've also had to teach the staff at Sears and Walmart how to test a battery when they told me bad batteries were OK.

 

Howdy, I trust this finds you without error codes on your Cadi!!

The SRX I have is a 2011 Preminum 2.8T. The thing has been running great for 200000 miles. Had to replace the water pump and now I am getting the service stabili trac system light and turbo does not spool. I cannot pull a code for either using a Foxwell 510 elite. With it I have checked all wheel speed sensors and they work. Checked all the reluctor rings and they look fine.
I do see that the ECBM doesn't show voltage even under braking. Took it on a 500 mile trip (had to) and it worked just fine except for the turbo and stabili trac light. I averaged 24 mpg with and AWD so it has to be something simple and easy.

Does the ECBM or traction control disable the turbo from spooling when there is an issue with stabili trac?

What is even funnier is, I have a 06 DTS and the stabili trac light started cycling on and off. I put all new brakes and rotors on, had front end aligned and the code it kick is C0561-71. You can be driving along 65 mph and it will cycle on and off a dozen times in 20 miles. I am thinking this one is a wiring connection issue.

Any thoughts or advise is greatly appreciated.
I am a seasoned mechanic/technician and prone to miss or overlook something so even if it is simple I wont be offended!

 

Hopefully it is not your ABS Controller. Paid $190 to dealership to tell me it's bad and GM doesn't make anymore. Car is 9 years old and they can not fix their product. Good Luck.

 

Thank you all for the information! Just recently had my evaporator fixed for my A/C in my 2016 Cadillac SRX and after the fix the ABS brake and service stabilitrak came on! Puzzled as to what it could be. had It hooked up to multiple computers and got code C056D maybe caused by a software issue! Just so random how it just all a sudden happens one thing after another!!

 

Here are the possible Code results for C056D. I completely agree about the coincidence. The only thing I can think of is if the evaporator repair somehow damaged the EBCM (but the evaporator is behind the console inside the cabin) or the shop might have damaged or loosened the connector to the EBCM (This kind of depends on the reputation of the shop). It's got a clam shell locking mechanism, so they could have potentially disconnected it then didn't connect it back correctly or damaged the pins when they did connect it back (there are a lot of pins on that connector)...hard to tell. The EBCM sits right below the brake fluid reservoir and behind the battery compartment. If you are mechanically inclined, you could potentially check it yourself. You have to take the battery out, the battery compartment out, and the EBCM connector is accessible. You might try disconnecting it, inspecting it for damage, and reinstalling it being sure the clam shell locking mechanism is completely engaged.

If that doesn't solve the issue then I would follow the steps I outlined above to send it off for repair.
Good luck.

C056D OBD-II Code

Information and consumer reports for OBD-II Code C056D.

dot.report

 

When your issue started this did the brake pedal ever shutter heavily at low speeds? My girls srx is throwing these lights intermittently, thought it might be related to something in the abs but after reading this thread I'm thinking it might be the same issue.
I just did full pads & rotors, wheel bearings, and 1 new rear CV which didn't seem to change anything. It's not throwing the cure frequently enough to get a cure scanner to read it, but tonight I drive it to the store and when the stabilitrack light came on the transmission lost gear, would just rev up with no acceleration, then when I hit the brakes I got the shutter again then the trans caught and it drove fine for a min before happening again, all at low speeds. Definitely seems like an electronic issue to me.

 

This was the most detailed comment and so kind of you to help others in this way. I'm a single woman and you have NO idea how the screwing (excuse my french) has began! Wish me luck!