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Any Help would be appreciated with this issue. I've spent days on this Forum and on Stingray and no one knows much about it. The car is a 2014 3LT Z51 M7 . How can I obtain the correct value for the car? I had to replace the RDCM due to the failure of the old one, It lost it programming, communication and failed diagnostic. Hence not being able to obtain the Value code prior to removal. Replace with GM new module and programmed using the default value OA listed in SPS because I wasn't able to read the value. ( See picture) . Now I have a code C0418 module requires reconfigurations
that picture makes it hard to tell if that mark after the "...20" is just a cast imperfection or was supposed to be a digit. Did you try using GDS2 and the number "20" to calibrate it?
To calibrate control module, perform the following procedure:
Install a scan tool.
Ignition ON.
Select Rear Differential Clutch Service Calibration Setup in the Rear Differential Clutch Control Module Configuration/Reset Function List.Note: The clutch service calibration will be the last two alphanumeric characters of the supplier assigned unique serial number. The characters must be entered exactly how it appears matching the uppercase. It will be found etched (1) on clutch pack housing.
Follow the scan tool directions to complete the calibration procedure.
that picture makes it hard to tell if that mark after the "...20" is just a cast imperfection or was supposed to be a digit. Did you try using GDS2 and the number "20" to calibrate it?
To calibrate control module, perform the following procedure:
Install a scan tool.
Ignition ON.
Select Rear Differential Clutch Service Calibration Setup in the Rear Differential Clutch Control Module Configuration/Reset Function List.Note: The clutch service calibration will be the last two alphanumeric characters of the supplier assigned unique serial number. The characters must be entered exactly how it appears matching the uppercase. It will be found etched (1) on clutch pack housing.
Follow the scan tool directions to complete the calibration procedure.
When I get to this point om GDS2 (Select Rear Differential Clutch Service Calibration Setup in the Rear Differential Clutch Control Module Configuration/Reset Function List.) and press next it goes straight to exit. I only get to the point where it ask for the value on sps during the setup process. There I used OA which is a default value and I was able t program the module, but I get code C0418 ( Module not configured ) They only made a few model in 2014. I can't understand why it's so difficult for GM to make these values
available. This experience is really affecting my decision to purchase a C8.
A local dealer could call GM techline who would be able to help them program it properly or they could call tech assistance and help diagnose the problem if programming doesn't work. I would imagine between one of those two, they would be able to help you figure out the values you need
The last character is supposed to be a letter. I talked to Dale about this over PM, and compared it to the number on my car. The 2nd part is 12 digits. But mine was a lot more crisp, and clearly ended in "0K". I verified that's what's programmed in my module as well. It's like the one on Dale's car was screwed up during the etching process.
The last character is supposed to be a letter. I talked to Dale about this over PM, and compared it to the number on my car. The 2nd part is 12 digits. But mine was a lot more crisp, and clearly ended in "0K". I verified that's what's programmed in my module as well. It's like the one on Dale's car was screwed up during the etching process.
Did you use OA, or 0A when you did it?
I used 0A. Were you able to verify on GDS2 going to module data?
Yeah. It's under "Rear Differential Clutch Factory Calibration".
Jeff when I try to calibrate thru GDS2 Rear Differential Clutch Factory Calibration it goes straight into the Exit screen. I was only able to input the value on sps during the set up process prior to re flashing the module.
Sorry. I was able to verify the setting in that screen, but there was no option to change everything.
You said your old module was DOA, right? If you've still got it, let me know if you'd be willing to send it to me. If it's got an EEPROM chip on it, I might be able to dump the contents and pull the old calibration value out. I can't make any promises though.
I had a chance to mess with this the other night. As expected, it didn't power up and talk to my bench harness. That's the whole reason Dale replaced it to begin with. So the next step was to pry the lid off and have a look inside. It's a pretty thick piece of aluminum, and I still managed to bend it when I broke it loose from the silicone sealant. If it was something I was concerned about re-using, I'd have put it in the oven to warm it up first.
Anyway, there's no external EEPROM as far as I can tell. The processor is a Freescale / NXP MC9S12XEQ384. It has its own internal EEPROM for calibration values. There's what looks like a BDM (background debug mode) pinout on the board, but I need a special tool to interface with that. I might buy one of those, because it could help me with another project I'm working on. But I'm not sure when or if I'll do that.
I might poke at it a little more and see if I can't get it to communicate with the scan tool.
The good news is, after adding another power connection, I managed to get it to talk to GDS2 on my test bench.
The bad news is, the calibration data is trashed I know it's not complete gibberish, because the diagnostic address, base and end model PNs, and alpha codes are the same as the ones on my car. The traceability number is in the correct format as well. The software module IDs are correct for a value that's set to 0xFFFFFFFF (all 1s in binary). The programming date is probably some other default value.
I don't think there's anything else that can be recovered from this thing. It was worth a shot though.
Thank you Jeff, It was a valid attempt and I appreciate you taking the time to help me.
Like everything else, It was working until it was not. LOL!
Set code C056E and would not allow me connect to it in GDS2 nor SPS.
Would the Value been listed under the rear Diff. Clutch Factory Calibration?
What's even more annoying is that field didn't show up at all under 'module ID info'. I had to run a vehicle wide DTC check in order to get that to show up. That's an exercise in patience when you only have 3 out of 25 or so modules hooked up on a bench. You have to wait for all the absent modules to time out.
And if that doesn't work, you can pm your vin and I could give GM a call from the dealership and see if they have the number on file in their systems
I would be most greatfull If you are still able to help me with obtaining the value for my car. I have exhausted all other options other than taking it to the dealership. The tree closest dealer to me, suggested I take it to a dealer In Orlando or Tampa as they don't have anyone experience with the corvette. They just don't want to screw with it. Either way Orlando or Tampa is 150 miles one way.
PM or text me at 850-238-2274 and I'll give you what ever info you need from me.
What's even more annoying is that field didn't show up at all under 'module ID info'. I had to run a vehicle wide DTC check in order to get that to show up. That's an exercise in patience when you only have 3 out of 25 or so modules hooked up on a bench. You have to wait for all the absent modules to time out.
Hi Jeff, I pm in you last week, but it's not going through. I been recovering from some health issues that has kept me passive Never got a chance to reprogrammed the eLSD was going to do it last week but I couldn't find the suggested instruction that you has send me. I think I might have deleted it when I clear my private messages.
if you still have it, could you resend it to me or post it here.
Need help with reading eLSD value code
I know it's not complete gibberish, because the diagnostic address, base and end model PNs, and alpha codes are the same as the ones on my car. The traceability number is in the correct format as well. The software module IDs are correct for a value that's set to 0xFFFFFFFF (all 1s in binary). The programming date is probably some other default value.
