IMPORTANT ELECTRICAL INFORMATION (Long!)
Maybe you could contact PATCHES or Bill Dearborne and see if they have access to the 2000 EBTCM schematic and information sheet and see if they will post it or send it to you. From there I can do my best to lead guide and direct you to a solution.
Bill, sorry it took me so long to reply, but Bill Dearborne did sent me the schematic i think for ebtcm. would you like me to e-mail it to you.
also can you explain to me why, after i reset the code for the c1243 it always come back with an H after it and not a C for current.
thanks
roger
Had the same flicker problem, even shut the engine off while driving and came back on my 98 coup. It was a loose connection on my battery that I just replaced, bad crimp. Rule of thump with flikering problems, all power connects to the battery start there for loose/corroded connections, then issolate grounding points. Once I fixed the crimp, I cleared out the codes that popped when I had the flicker issue.
Only 2 codes popped on the HVAC, from what I read in past post I will disconnect the battery for 1 hour to reset the actuator and go from there. Hope this helps.
Gunner
Last edited by C5_Gunner; Dec 21, 2007 at 12:02 PM.





If the drive gear is stripped or the door stop tab is broken the motor will either continue to run or stop in the wrong place.
BC
The Best of Corvette for Corvette Enthusiasts
If the drive gear is stripped or the door stop tab is broken the motor will either continue to run or stop in the wrong place.
BC
If the drive gear is stripped or the door stop tab is broken the motor will either continue to run or stop in the wrong place.
BC
I read on this thread about the drive gear replacement....
The headlights currently work just fine...
(after using our 99 Coupe with 36K miles all day without a hitch), may be related to bad grounds, correct?If so, I should locate the grounds as per the included schematics and then try to pry them apart to remove any corrosion that may have gotten in there, right? Just how hard is it to pry open the little suckers, and how easy is it to break one of them (yes, I AM related to Murphy
)Man, I hope that's what it is, because it would sure be a lot cheaper than doing some ex$pen$ive electrical work.
Thank you, thank you, thank you for this invaluable thread, and for your answers in advance.





(after using our 99 Coupe with 36K miles all day without a hitch), may be related to bad grounds, correct?If so, I should locate the grounds as per the included schematics and then try to pry them apart to remove any corrosion that may have gotten in there, right? Just how hard is it to pry open the little suckers, and how easy is it to break one of them (yes, I AM related to Murphy
)Man, I hope that's what it is, because it would sure be a lot cheaper than doing some ex$pen$ive electrical work.
Thank you, thank you, thank you for this invaluable thread, and for your answers in advance.
Thanks
Bill
28 TCS - C1226H
58 SDM - B1001H, U1064H
AO-LDCM - B2282H, B2284H, U1064H
AI -RDCM - B2283H, B2285H, U1064H
BO-RFA - U1255H, U1096H, U1064H, U1016H
A couple notes - both the battery and the RF wheel sensor were replaced last year, not sure if the tech cleared codes then, and the car has been driven quite a few times since either/both were replaced. Not sure if that was important, but mentioned it just in case.
As you can imagine, even looking at what the codes mean from the document available on this site, I'm not sure what its telling me. Anything you can do to shed light on it would be greatly appreciated.
Personally, I think the car knows it's about to be paid off, and it's trying to find different ways of taking my money!
Thanks!
Last edited by The Viking; Feb 5, 2008 at 12:05 AM.
I noticed something on the DIC and assumed it was ABS activating the way it does sometimes on puddles or railroad tracks or bumpy roads.
It kept making a racket and I looked down and saw it said
SERVICE ABS
SERVICE AH
SERVICE TC
or whatever the three errors are to that effect.
I've had that error before, and usually it goes away with the next start. It also usually is more likely to happen in cold weather.
So I gave it a couple of days of sunny, warm (60-70 degree) days and no luck.
Next, I came here and found this thread.
I pulled my codes and the only current code I had was the dreaded C1214 code.
I had some door codes in history, which doesn't surprise me because my locks have been flaky as heck lately. But nothing that would pertain to this problem.
Next I went through my grounds with a fine tooth comb. They all looked good, except for some black paint on the studs, which I scraped off real good. Whoever decided to use TALL studs on those grounds in the engine compartment should be strung up. You can't easily get a wrench on them, and unless you have a SMALL SIZED (3/8 or 10mm) deep well socket kit (I don't) they are a bear.
I also got my Voltmeter out and checked my connections and fuses as well as I could and I am pulling a solid 14 volts to all the grounds I could get to.
I then loosened the connector to the EBCM and retightened it a couple of times with that big gray lever bar thing. I restarted the car and got the three error messages.
Oh well, it's time to pull the EBCM off and send it to the magic ABSFIXER guy.
That turned out to be interesting.
I have a Z06. I think that means I have a power steering cooler that the standard C5 doesn't have. RIGHT WHERE your arm needs to be most of the time while working on the EBCM.
My right arm is shredded. Looking back, I'd recommend long sleeve shirts for this removal.
I got the 6 torx screws off, with some contortions and running the car up on ramps. I am still wondering what it is going to be like to get them back ON...
Also I would note that the ABSFIXER site says to gently remove the module. They don't mention that some sort of LOCKTITE is used on the EBCM face. I ended up using an old wood chisel to get between the two surfaces and twist. The whole time I kept wondering if I was about to ruin my entire ABS. But it eventually popped off.
Getting it out of there was a challenge too. I went through the top. I bet the bottom would have been easier.
So... that leaves me with the EBCM ready to go to ABSFIXER for the $150 special. If that works, I will be a happy camper.
One other side note, once you pull the EBCM, you get a lot fewer error codes. I just get a "SERVICE VEHICLE SOON" code now instead of three codes when I start up... so that is nice.
I'll post back and let you know if the ABSFIXER works. If it does I'll be





I noticed something on the DIC and assumed it was ABS activating the way it does sometimes on puddles or railroad tracks or bumpy roads.
It kept making a racket and I looked down and saw it said
SERVICE ABS
SERVICE AH
SERVICE TC
or whatever the three errors are to that effect.
I've had that error before, and usually it goes away with the next start. It also usually is more likely to happen in cold weather.
So I gave it a couple of days of sunny, warm (60-70 degree) days and no luck.
Next, I came here and found this thread.
I pulled my codes and the only current code I had was the dreaded C1214 code.
I had some door codes in history, which doesn't surprise me because my locks have been flaky as heck lately. But nothing that would pertain to this problem.
Next I went through my grounds with a fine tooth comb. They all looked good, except for some black paint on the studs, which I scraped off real good. Whoever decided to use TALL studs on those grounds in the engine compartment should be strung up. You can't easily get a wrench on them, and unless you have a SMALL SIZED (3/8 or 10mm) deep well socket kit (I don't) they are a bear.
I also got my Voltmeter out and checked my connections and fuses as well as I could and I am pulling a solid 14 volts to all the grounds I could get to.
I then loosened the connector to the EBCM and retightened it a couple of times with that big gray lever bar thing. I restarted the car and got the three error messages.
Oh well, it's time to pull the EBCM off and send it to the magic ABSFIXER guy.
That turned out to be interesting.
I have a Z06. I think that means I have a power steering cooler that the standard C5 doesn't have. RIGHT WHERE your arm needs to be most of the time while working on the EBCM.
My right arm is shredded. Looking back, I'd recommend long sleeve shirts for this removal.
I got the 6 torx screws off, with some contortions and running the car up on ramps. I am still wondering what it is going to be like to get them back ON...
Also I would note that the ABSFIXER site says to gently remove the module. They don't mention that some sort of LOCKTITE is used on the EBCM face. I ended up using an old wood chisel to get between the two surfaces and twist. The whole time I kept wondering if I was about to ruin my entire ABS. But it eventually popped off.
Getting it out of there was a challenge too. I went through the top. I bet the bottom would have been easier.
So... that leaves me with the EBCM ready to go to ABSFIXER for the $150 special. If that works, I will be a happy camper.
One other side note, once you pull the EBCM, you get a lot fewer error codes. I just get a "SERVICE VEHICLE SOON" code now instead of three codes when I start up... so that is nice.
I'll post back and let you know if the ABSFIXER works. If it does I'll be

Nice post!
Yep, the module is sealed very well
. When you reinstall it, make sure the rubber O ring on the connectors are clean and you lubricate just the O rings with silicone dielectric grease. I put black silicone RTV on the sealing surface of the EBTCM just to make sure it sealed good.
BC
I noticed something on the DIC and assumed it was ABS activating the way it does sometimes on puddles or railroad tracks or bumpy roads.
It kept making a racket and I looked down and saw it said
SERVICE ABS
SERVICE AH
SERVICE TC
or whatever the three errors are to that effect.
I've had that error before, and usually it goes away with the next start. It also usually is more likely to happen in cold weather.
So I gave it a couple of days of sunny, warm (60-70 degree) days and no luck.
Next, I came here and found this thread.
I pulled my codes and the only current code I had was the dreaded C1214 code.
I had some door codes in history, which doesn't surprise me because my locks have been flaky as heck lately. But nothing that would pertain to this problem.
Next I went through my grounds with a fine tooth comb. They all looked good, except for some black paint on the studs, which I scraped off real good. Whoever decided to use TALL studs on those grounds in the engine compartment should be strung up. You can't easily get a wrench on them, and unless you have a SMALL SIZED (3/8 or 10mm) deep well socket kit (I don't) they are a bear.
I also got my Voltmeter out and checked my connections and fuses as well as I could and I am pulling a solid 14 volts to all the grounds I could get to.
I then loosened the connector to the EBCM and retightened it a couple of times with that big gray lever bar thing. I restarted the car and got the three error messages.
Oh well, it's time to pull the EBCM off and send it to the magic ABSFIXER guy.
That turned out to be interesting.
I have a Z06. I think that means I have a power steering cooler that the standard C5 doesn't have. RIGHT WHERE your arm needs to be most of the time while working on the EBCM.
My right arm is shredded. Looking back, I'd recommend long sleeve shirts for this removal.
I got the 6 torx screws off, with some contortions and running the car up on ramps. I am still wondering what it is going to be like to get them back ON...
Also I would note that the ABSFIXER site says to gently remove the module. They don't mention that some sort of LOCKTITE is used on the EBCM face. I ended up using an old wood chisel to get between the two surfaces and twist. The whole time I kept wondering if I was about to ruin my entire ABS. But it eventually popped off.
Getting it out of there was a challenge too. I went through the top. I bet the bottom would have been easier.
So... that leaves me with the EBCM ready to go to ABSFIXER for the $150 special. If that works, I will be a happy camper.
One other side note, once you pull the EBCM, you get a lot fewer error codes. I just get a "SERVICE VEHICLE SOON" code now instead of three codes when I start up... so that is nice.
I'll post back and let you know if the ABSFIXER works. If it does I'll be














