Ghost of EBCM Failure Future
Thread Starter
Burning Brakes
Joined: Oct 2006
Posts: 1,103
Likes: 472
From: Newark Delaware
Ghost of EBCM Failure Future
I believe my '99 C5 and I have been visited by the Ghost of EBCM Failure Future! Over the past several months I have gotten some foreshadowing of problems to come - Service ABS and Service Traction Control messages. Has happened only 3 or 4 times and turning off the engine/ignition and restarting ("the Microsoft method") has resolved the issue and cleared the messages (only temporarily, I fear).
Is this how the eventual failure manifests itself - occasional hiccups like this? That then become more and more frequent until finally becoming permanent?
K9Leader
Red cars are faster. They did a study on it.
Is this how the eventual failure manifests itself - occasional hiccups like this? That then become more and more frequent until finally becoming permanent?
K9Leader
Red cars are faster. They did a study on it.
Thread Starter
Burning Brakes
Joined: Oct 2006
Posts: 1,103
Likes: 472
From: Newark Delaware
Yes, I know about running the codes - have done it in the past, just didn't have time to do it yesterday as "She-who-tolerates-the-Corvette" was not tolerating it much yesterday and wanted me doing "getting ready for Christmas company" things.
Here is what I got just now:
28-TCS - C1226 H & C1255 H
58-SDM - B1001 H
AO-LDCM - B2284 H, U1064 H
A1-RDCM - B2285 H, U1064 H
A6-SCM - U1160 H
BO-RFA U1096 H, U1064 H, U1016 H
No Codes on 10-PCM, 40-BCM, 60-IPC, 99-HVAC. 80-Radio gave me a No Comm, but I have an aftermarket unit.
That C1255 is the "Internal EBTCM Malfunction" and the worrisome one, right? I see that code C1256 is the "Internal EBCM Malfunction." What is the difference between EBCM and EBTCM?
K9Leader
Red cars are faster. They did a study on it.
Here is what I got just now:
28-TCS - C1226 H & C1255 H
58-SDM - B1001 H
AO-LDCM - B2284 H, U1064 H
A1-RDCM - B2285 H, U1064 H
A6-SCM - U1160 H
BO-RFA U1096 H, U1064 H, U1016 H
No Codes on 10-PCM, 40-BCM, 60-IPC, 99-HVAC. 80-Radio gave me a No Comm, but I have an aftermarket unit.
That C1255 is the "Internal EBTCM Malfunction" and the worrisome one, right? I see that code C1256 is the "Internal EBCM Malfunction." What is the difference between EBCM and EBTCM?
K9Leader
Red cars are faster. They did a study on it.
Drifting
Joined: Aug 2012
Posts: 1,511
Likes: 61
I believe my '99 C5 and I have been visited by the Ghost of EBCM Failure Future! Over the past several months I have gotten some foreshadowing of problems to come - Service ABS and Service Traction Control messages. Has happened only 3 or 4 times and turning off the engine/ignition and restarting ("the Microsoft method") has resolved the issue and cleared the messages (only temporarily, I fear).
Is this how the eventual failure manifests itself - occasional hiccups like this? That then become more and more frequent until finally becoming permanent?
K9Leader
Red cars are faster. They did a study on it.
Is this how the eventual failure manifests itself - occasional hiccups like this? That then become more and more frequent until finally becoming permanent?
K9Leader
Red cars are faster. They did a study on it.
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
I agree.. Clear the DTC and if the car farts wrong,, immediately read the DTCs and write down everything that has a DTC.
The loss of communications codes are interesting. If they continue to happen, we have areas to examine that can cause that issue.
BC
The loss of communications codes are interesting. If they continue to happen, we have areas to examine that can cause that issue.
BC
Thread Starter
Burning Brakes
Joined: Oct 2006
Posts: 1,103
Likes: 472
From: Newark Delaware
Car has 54K miles on it. I cleared the codes and took it out this morning - no codes upon return. I will probably start cleaning grounds in case that might help and just 'cause it oughtta be done.
K9Leader
K9Leader
Thread Starter
Burning Brakes
Joined: Oct 2006
Posts: 1,103
Likes: 472
From: Newark Delaware
Cleaned the two grounds behind the headlamps - biggest problem was getting the plastic housings apart. They were remarkably clean - no corrosion at all, not much grime. Also did the ground underneath the battery - again, very clean.
It's sunny today, so another test ride may be called for . . .
K9Leader
It's sunny today, so another test ride may be called for . . .
K9Leader
