*HELP* 416 LS9 2010 Camaro SS *Service Stabilitrack Issues*

[Brandonlin152]

Hi Everyone,

I am new to the group. I have a 2010 Camaro 1SS 6MT with forged internals, 416 stroker kit, and LS9 blower on top.

Issue: When the car moves I get Service stabilitrack with all traction lights on. Sometimes I also get the BRAKE and ABS light on with them as well. It is usually a variation of 3 different lights that stay on at one time then go away.

I have been trying to diagnose my issue with stabilitrack and ABS for about a year now. I have replaced the hub and sensor and get proper readings on those from the scan tool. I also know it is not related to the engine. On the live data with the scan tool the ABS Pump Motor always reads 0V. The many codes I get are listed below and can also be found in the images. Thanks in advance any help would be great! I am desperate

I am thinking it is a problem with the ABS Pump and should be replaced or it is a ground somewhere. (Although I have looked so hard)

U0121 Lost communications with electronic brake control module (EBCM)

C0035 Left front wheel speed sensor circuit (even after replacing hub and sensor)

C0110 Pump motor circuit

C0242 Powertrain control module indicated traction control

C0245 Wheel speed sensor frequency

C0710-5A Steering position signal - Not plausible

U0125 Lost communications with multi-axis acceleration sensor module

U0126 Lost communications with multi-axis acceleration sensor module

U0121 Lost communications with electronic brake control module (EBCM)

Thanks!!!

[ADVMax]

I’ve found that “loss of communication” is a good place to begin basic systematic troubleshooting when encountering such issues.

To find what a problem is you must find everything the problem isn’t.

[silversleeper]

Throwing a bunch of codes is often bad battery or bad grounds. With the motor being swapped I'd look close at what ground connections should be clean and in place and didn't get lost during the swap out. There' s a few good diagrams on it here, I know the search function on here sucks, better to use google.
copy/paste this into google site:camaro5.com engine ground connections
https://www.camaro5.com/forums/showthread.php?t=221700
https://www.camaro5.com/forums/showt...=399658&page=4
https://www.camaro5.com/forums/showthread.php?t=511228


I'm thinking along the lines of the post that is above me, before I finished searching to post this.
Checking grounds and general cable plug-ins to make sure pins aren't pushed back or bent or a cable got mashed during the work. I'd do that first before trying to chase a single trouble code only, because of how many you got at once.

[ADVMax]

yes

[NOT A 45]

Originally Posted by Brandonlin152

Hi Everyone,

I am new to the group. I have a 2010 Camaro 1SS 6MT with forged internals, 416 stroker kit, and LS9 blower on top.

Issue: When the car moves I get Service stabilitrack with all traction lights on. Sometimes I also get the BRAKE and ABS light on with them as well. It is usually a variation of 3 different lights that stay on at one time then go away.

I have been trying to diagnose my issue with stabilitrack and ABS for about a year now. I have replaced the hub and sensor and get proper readings on those from the scan tool. I also know it is not related to the engine. On the live data with the scan tool the ABS Pump Motor always reads 0V. The many codes I get are listed below and can also be found in the images. Thanks in advance any help would be great! I am desperate



I am thinking it is a problem with the ABS Pump and should be replaced or it is a ground somewhere. (Although I have looked so hard)

U0121 Lost communications with electronic brake control module (EBCM)

C0035 Left front wheel speed sensor circuit (even after replacing hub and sensor)

C0110 Pump motor circuit

C0242 Powertrain control module indicated traction control

C0245 Wheel speed sensor frequency

C0710-5A Steering position signal - Not plausible

U0125 Lost communications with multi-axis acceleration sensor module

U0126 Lost communications with multi-axis acceleration sensor module

U0121 Lost communications with electronic brake control module (EBCM)

Thanks!!!

I've seen this many times. It's usually the ebcm but I always sell the bpmv with it. Also looks like your going to need to replace the steering wheel angle sensor as well. The angle sensor is plug and play but the ebcm is not, it will need programming.

[Rock-It Man]

Before replacing modules and sensors, look at wires in the engine compartment. Pinched wires or insulation melted from proximity to headers (if have them) recur in this forum.

[NOT A 45]

Originally Posted by Rock-It Man

Before replacing modules and sensors, look at wires in the engine compartment. Pinched wires or insulation melted from proximity to headers (if have them) recur in this forum.

That's great advice for any electrical problem, but in this instance you have to fully understand what the scan tool is telling you. Although all the codes set are history and not current, only one of the codes requested the light to come on. C0110 is where you need to start the diagnosis. The 2 digits following the code have meaning as well, C0110-00 means there is either a short to the pump motor or there is a open circuit/high resistance to the pump motor. The power to the pump motor comes from the relay in the ebcm, and the ebcm mounts directly to the bpmv.....there is no wiring between the 2. Armed with this knowledge we now know there are only a few possibilities.
1. There's a open or short in the pump motor windings
2. The relay in the ebcm is faulty
3. There's a problem with the power or ground going to the ebcm
4. The circuitry in the ebcm is faulty.

After verifying the integrity of the power and ground to the ebcm (which I would expect a slew of other codes to be set if this were a problem) it can only be the module or the bpmv. The diagnostic from GM actually directs you to replace the bpmv first and if the code returns replace the ebcm! Try selling that to a customer! $2500 in parts plus labor.

Because the ebcm mounts directly to the bpmv there is no way to tell which part is faulty. My advice is to start with the ebcm since you have to remove it first anyway and you don't have to fool with the brake lines. But don't be surprised if you still have to replace the bpmv as well. I've been down this road too many times that's why I sell both pieces from the start.

[sscamaro]

I had C6 Vette, that it had a problem. I had to have the Yay sensor replaced under warranty.

[silversleeper]

Originally Posted by NOT A 45

That's great advice for any electrical problem, but in this instance you have to fully understand what the scan tool is telling you. Although all the codes set are history and not current, only one of the codes requested the light to come on. C0110 is where you need to start the diagnosis. The 2 digits following the code have meaning as well, C0110-00 means there is either a short to the pump motor or there is a open circuit/high resistance to the pump motor. The power to the pump motor comes from the relay in the ebcm, and the ebcm mounts directly to the bpmv.....there is no wiring between the 2. Armed with this knowledge we now know there are only a few possibilities.
1. There's a open or short in the pump motor windings
2. The relay in the ebcm is faulty
3. There's a problem with the power or ground going to the ebcm
4. The circuitry in the ebcm is faulty.

After verifying the integrity of the power and ground to the ebcm (which I would expect a slew of other codes to be set if this were a problem) it can only be the module or the bpmv. The diagnostic from GM actually directs you to replace the bpmv first and if the code returns replace the ebcm! Try selling that to a customer! $2500 in parts plus labor.

Because the ebcm mounts directly to the bpmv there is no way to tell which part is faulty. My advice is to start with the ebcm since you have to remove it first anyway and you don't have to fool with the brake lines. But don't be surprised if you still have to replace the bpmv as well. I've been down this road too many times that's why I sell both pieces from the start.

That is good information. Do you happen to know off the top of your head if any junkyard 5th gen computer modules will work or if they are different?

[NOT A 45]

Originally Posted by silversleeper

That is good information. Do you happen to know off the top of your head if any junkyard 5th gen computer modules will work or if they are different?

If its the same part number you should be able to overwrite the program. The newer modules like 16 up you cannot

[Aqua Blue RS/SS]

Originally Posted by NOT A 45

If its the same part number you should be able to overwrite the program. The newer modules like 16 up you cannot

Nice info! I saw you said you work at a dealer near DC? Care if I ask which one? I worked in a couple body shops in northern Va and was in and out of a lot of the area dealers running parts and such. I grew up in the area and my family is mostly all still there.

[Batmanntexas]

Originally Posted by NOT A 45

That's great advice for any electrical problem, but in this instance you have to fully understand what the scan tool is telling you. Although all the codes set are history and not current, only one of the codes requested the light to come on. C0110 is where you need to start the diagnosis. The 2 digits following the code have meaning as well, C0110-00 means there is either a short to the pump motor or there is a open circuit/high resistance to the pump motor. The power to the pump motor comes from the relay in the ebcm, and the ebcm mounts directly to the bpmv.....there is no wiring between the 2. Armed with this knowledge we now know there are only a few possibilities.
1. There's a open or short in the pump motor windings
2. The relay in the ebcm is faulty
3. There's a problem with the power or ground going to the ebcm
4. The circuitry in the ebcm is faulty.

After verifying the integrity of the power and ground to the ebcm (which I would expect a slew of other codes to be set if this were a problem) it can only be the module or the bpmv. The diagnostic from GM actually directs you to replace the bpmv first and if the code returns replace the ebcm! Try selling that to a customer! $2500 in parts plus labor.

Because the ebcm mounts directly to the bpmv there is no way to tell which part is faulty. My advice is to start with the ebcm since you have to remove it first anyway and you don't have to fool with the brake lines. But don't be surprised if you still have to replace the bpmv as well. I've been down this road too many times that's why I sell both pieces from the start.

Excellent information!! You rock!

[NOT A 45]

Originally Posted by Aqua Blue RS/SS

Nice info! I saw you said you work at a dealer near DC? Care if I ask which one? I worked in a couple body shops in northern Va and was in and out of a lot of the area dealers running parts and such. I grew up in the area and my family is mostly all still there.

I’m the corvette tech at Ourisman Chevrolet of Bowie however I’ve been doing this for 38 years so I’ve been around the block...lol Lotaburger is my spot every time I’m in Vegas btw!

[Brandonlin152]

Originally Posted by NOT A 45

That's great advice for any electrical problem, but in this instance you have to fully understand what the scan tool is telling you. Although all the codes set are history and not current, only one of the codes requested the light to come on. C0110 is where you need to start the diagnosis. The 2 digits following the code have meaning as well, C0110-00 means there is either a short to the pump motor or there is a open circuit/high resistance to the pump motor. The power to the pump motor comes from the relay in the ebcm, and the ebcm mounts directly to the bpmv.....there is no wiring between the 2. Armed with this knowledge we now know there are only a few possibilities.
1. There's a open or short in the pump motor windings
2. The relay in the ebcm is faulty
3. There's a problem with the power or ground going to the ebcm
4. The circuitry in the ebcm is faulty.

After verifying the integrity of the power and ground to the ebcm (which I would expect a slew of other codes to be set if this were a problem) it can only be the module or the bpmv. The diagnostic from GM actually directs you to replace the bpmv first and if the code returns replace the ebcm! Try selling that to a customer! $2500 in parts plus labor.

Because the ebcm mounts directly to the bpmv there is no way to tell which part is faulty. My advice is to start with the ebcm since you have to remove it first anyway and you don't have to fool with the brake lines. But don't be surprised if you still have to replace the bpmv as well. I've been down this road too many times that's why I sell both pieces from the start.

Thank you, I will test this during the week! Can I buy a used ebcm on ebay or not a good idea?