Ah, so they potted it trying to increase reliability. Pretty hard to fix something like that..

I'd like to have a dud to play with.

Ron

 

I would like to hear more aboout this cause.
Readysport?
I sent you a PM with no response.

Ron

 

I think one of the problems with these threads is the confusion that exists in identifying the different modules. Is Readysport offering a fix for the early modules or the commonly repaired late ones?

 

Your module is a Delphi ABS Module. It has been a while but I believe all C5s except maybe the 97 had Delphi modules. All C6s had them through the 08 model year when GM went back to Bosch.

These modules have circuit boards loaded with complex components inside them. In electrical modules most failures are due to connection failures. Either the connection from the circuit board to the outside world fails or the connection from inside a component to the components lead fails or the connection from the lead to the circuit board fails. Some failures to the input/output leads in the module can be repaired but not others, failures of the input/output leads of a component are not repairable. You need to replace the component.

These components are usually not identified except to the original designer and manufacturer. If a Delphi unit they will have Delphi identifiers on them. If Bosch used the same exact component it would have Bosch identifiers on it. The only company that knows the truth is the company that made the component, usually a large chip maker like Xilinx, Altera, TI, Intel, AMD, etc. They do not like to see orders smaller than several million components at a time.

They usually obsolete the technology used to make components like these after 2 or 3 years and companies like Bosch/Delphi have to decide whether they want to make a lifetime buy of the old technology or redesign the functions contained in the component in a new technology. The redesign and testing gets very expensive and usually isn't justifiable so they make an estimate of how many will be required over the next 10 years and buy them. Once that supply is used up you are not going to get any replacement modules and aftermarket repair shops aren't going to be able to repair the modules if a certain component went bad.

If the auto company isn't willing to take on the expense of redesigning/testing the module for an old car nobody else will since it would be a very large expense with a high risk of failure unless they had a way of performing tests on a test track. Even if they could get the parts some of those parts are field programmable and the automakers aren't going to release the programming data so the code load could be duplicated.


Bill

 

Other than some places that replace an easy to replace relay in the 01 through 04 EBCMs I don't know of any commonly repaired EBCMs.

Bill

 

If you find a picture of a Bosch 5.3 unit you will see our unit. If you do some research on the early C5 Corvette EBCM you will find it refered as a bosch 5.3 unit.

 

I just cut a pasted from the website link at the top of the page. I gave that as a reference point for someone in need to call. Sorry I did not respond sooner.

 

http://www.cheapabs.com/vrchevy.html

 

Another source of info
http://www.digitalcorvettes.com/foru...p/t-14738.html

 

Well my 99 also looks lile darguys photo. Definitely not like the photo of the Bosch 5.3.

Has anyone tried these guys for 800 bucks? I'm guessing not.

http://corvettespecialty.com/corvett...ice-abs-module


But then they admit that 60% can't be repaired.

 

Just found this on ebay.

http://cgi.ebay.com/ebaymotors/Corve...item4aaf1dbe47

Not a great picture but looks more like the Bosch unit. Perhaps the 97-98 rear mounted are Bosch and the 99-2000 frt mount are Delphi.

 

Bill speaks the truth. Custom ASICS with no identifier on them get next to impossible to track down. ASIC = Application Specific Intigrated Circuit.
Often times there is nothing on the IC at all.
GM has the schematics. Just have to wonder if they were ever released.
Sometimes manufacturers build way too many extra parts that either get scrapped or end up on the "grey" market.
Kinda sucks doesn't it?

Ron

 

I'm wondering how difficult this would be on a 99-00 where the module is already in the front like the 01-04 ??
I did find that the wheel sensors are all the same.

 

That's what I was wondering, adapting the newer one. Unfortunately electronics isn't my forte. Maybe there is an electronics engineer somewhere that could figure it out.

 

Yeah, this is where I'm at. From my own digging, the only company that claimed they could rebuild my model "V" Delphi EBTCM w/ Active Handling turns out to have terrible feedback (after a non-CF google search). I decided to save myself that particular hassle and now have 3 options:

1. Live without ABS/TC/AH on my DD vehicle in a very rainy/busy city.
2. Turn the car into a dedicated race car and get a different DD.
3. Wait for some clever CF member to figure out how to retrofit a later system into my car, and then copy what they did.

 

I did a google search for the term stand alone abs and I came across a post in the c4 section about the 89 that has it's own computer?

I am just wondering if maybe a new direction might be worth looking into?

I realty do not feel gm or any government agency is going to step in and help us. So maybe we need to look at some other options at this time?

Here is the link

http://forums.corvetteforum.com/c4-t...ne-system.html

Another good read
http://www.hotrod.com/techarticles/h...s/viewall.html

Ok, back to my corner.

 

I found the Hot Rod article particuarly interesting. If this guy can make an 01-04 setup work on a 69 Camaro, I would think retrofiting an early C5 would be much easier. I'd like to see the 99-00 unit next to a 01-04 and compare how the hyd ports and wiring connectors compare.

Here's one complete.
http://cgi.ebay.com/ebaymotors/2004-...item2eb811464b

 

That's the thing here, you would need all the parts/schematics to make a stab at this, probably a Tech II also.

 

I looked at my spare V code unit and compared to the pics one on e-Bay and the connectors aren't close to the same. The orientation of the hydraulic ports is similar. I gotta leave, but if I had time I would check and see if the brake line part numbers are the same between 01-04 and ours. As far as the electrical connection goes, with a schematic maybe an end off the later version could be put on ours and inputs could be matched?

 

I was thinking in the direction of using the 01+ computer as a stand alone to operate the newer abs????? As I understand, the 01+ electronics are not backwards compatible to the pre 01?

Are the connectors still available?

Would seem pretty straightforward then to just run the abs?

I may try this. Of course all testing would be in an off road safe situation.