Help! C1255 issue

[kc8hqs]

I purchased my first Corvette (1999) last month and I'm enjoying the heck out of it. That being said, I am looking for any suggestions that anybody may have on this issue...

The traction control and ABS lights came on once a couple weeks ago. After a couple miles, I stopped and turned the vehicle off and back on. The lights went out and all was well. Fast forward a couple weeks and the 2 lights popped back on. After the light wouldn't go out, I pulled the code and the only current one that continuously shows is C1255. I read in numerous forums that cleaning the grounds could fix this issue and I'm thinking the EBCM may need to be fixed. A buddy and I thoroughly cleaned the 2 grounds that are over the right and left fenders and this didn't change anything.

Which brings me to my questions:

Should I try to find the other grounds and clean those? We didn't really see any others while looking around the engine compartment but looking at a scan of the locations of the grounds, there must be others. Or should I figure it's the EBCM malfunctioning (which is quite common from what I read)? A repair shop told me they send the EBCM out to a company in California. Does anybody happen to know who this company would be so I can contact them myself?

Thank you in advance for any help you can provide.

Dale

 

[dadaroo]

There are no known EBCM/ABS shops that can/will repair the early model EBCMs like yours. There have been some people who got lucky and found a problem internally that they were able to fix. Your code (internal malfunction) is considered as the EBCM "kiss of death".

Here is a link to one guy who may be able to fix it, but he now requires you bring him the car. It does include some "home" fixes among the 107 Posts.

Good news is, your problem does not affect normal braking. May affect ABS which I don't like anyway.

At this time, all the new and good used EBCMs have been taken off the market.

I am sure at some point there will be replacement EBCMs or a shop that will fix them.

I know this is not what you wanted to hear but it is what it is. Mr. Sam

 

[Hib Halverson]

DTC C1255 is an internal fault in the EBTCM.

Cleaning grounds is always good if they are dirty but, in this instance, cleaning grounds will likely not affect this problem.

The only possible wires and connections fix is the connection at the EBTCM.

1 Turn off the ign.
2 Disconnect the brake module. Inspect the cable end for corrosion or physical damage. Inspect the connection on the module for corrosion or physical damage. Repair as necessary
3 Reconnect the EBTCM
4 Clear codes
5Road test.

If the code resets, replace the EBTCM and, based on what "dadaroo" says, at this point, that might be difficult. Your only choice might be an Internet or telephone search of Corvette use parts vendors for a module to fit a 99.

 

[kc8hqs]

Thank you for your replies.

I'm still unsure as to where the EBCM is located on this vehicle. I thought I read is was near the front end. Is this correct?

Dale

DTC C1255 is an internal fault in the EBTCM.

Cleaning grounds is always good if they are dirty but, in this instance, cleaning grounds will likely not affect this problem.

The only possible wires and connections fix is the connection at the EBTCM.

1 Turn off the ign.
2 Disconnect the brake module. Inspect the cable end for corrosion or physical damage. Inspect the connection on the module for corrosion or physical damage. Repair as necessary
3 Reconnect the EBTCM
4 Clear codes
5Road test.

If the code resets, replace the EBTCM and, based on what "dadaroo" says, at this point, that might be difficult. Your only choice might be an Internet or telephone search of Corvette use parts vendors for a module to fit a 99.

 

[LLC5]

Thank you for your replies.

I'm still unsure as to where the EBCM is located on this vehicle. I thought I read is was near the front end. Is this correct?

Dale

If it is in fact on the front of the vehicle, then it is on the left front frame area by the power steering rack. I think it is in the rear though, which puts it next to the rear differential on the rear frame cradle, on the driver side.

 

[Antz81]

If it is the EBCM and you do want it to be repaired, it might be possible to find an electronic repair specialist that's willing to give it a go. But they do like to charge big $.

 

[dadaroo]

The EBCM is in the rear only for 97 and early 98.

Here is how to remove: ABSFIXER.COM / ABS EBCM Repair