While I don't currently have a porblem, thanks to this forum I know that this item is no longer available.

However, what happens if this sensors fails; do you have to sell the car for parts?

Thank you; any comments will be appreciated.

 

1. Swap out the front engine bay harness
2. Use the 2001up EBCM
3. Use the 2001up SPS
4. Replace BCM w/ 2001up

 

Thank you for the info, what will this cost parts and labor and why will it work?.

Also, what is an SPS and BCM
Thanx again!

 

No.

Most 97-00 cars are in the 10-13k price range at this point, owners don't seem to be repairing them in the past few years

 

You have to swap the BPMV (brake pressure modulating valve) and the EBCM (Electronic brake control module) or basically the whole ABS module that sits in front of the engine. That will also require the bracket that mounts it to the crossmember as well as some modifications to the brake lines. If you're not too picky about it you can likely re-bend a few to reach but will have to splice and extend a few of them.

I believe the SWS Steve is referring to is really the SWPS (steering wheel position sensor). Now, I'm betting you most likely don't have to swap it. The 2000 SWPS has an analog signal as well as the digital signals. The '01-up system only uses the digital signals. The analog signal comes from a POT inside the SWPS which is basically a wiper running over a resistive material so it's the most likely part that fails. This means I'd bet in most SWPS failure cases you can still leave the SWPS and only use the digital signals. You will also have to splice the different connector into the harness if you do change the SWPS.

As for the wiring. The connector appears to be very similar to the PCM (powertrain control module) connectors GM uses. On those connectors, you can take them apart and pop the wires out of the connector. So, you could get a '01-up connector and re-pin the old harness into the new connector. There is a wire the same color and function on your '00 car to match every connection required to the '01-up ABS module. GM kept the wiring harnesses amost the same and just removed the extra SWPS analog signal wires. There are still some power and ground wires on the connector you'd likely have to splice, but I think it's only about 5 wires. Might be cheaper and easier than replacing the harness.

The BCM is Body Control Module. I'm not convinced this has to change on a '00 car but it might.

As for cost - buying used is likely something like this;
ABS module - $400 to $800
Bracket - $50
Connector - $50
BCM - $200 to $300
SWPS - $60 or $70 new
Plus the install time

As you can see, you'd likely be into it for well over $1k if you dropped the car off someplace and asked for it to be done.

 

Being the owner of a 1999 with a bad swps and only 48,000 miles on it - I'd replace it in a NY minute if I could...

 

My car isn't broken. I'm trying to help others out. I've spend a bunch of time looking through wiring diagrams and the service manuals to determine what the differences are. Have you done anything about this besides being negative?

 

Maybe you could be the first to test this theory. I can't find anybody who has actually done the swap. If you attempt this please report back on the results.

http://forums.corvetteforum.com/c5-t...dule-pump.html

 

That's nice, trying to provide info that could be helpful and I get told I'm being negative. It really does take all kinds. I'm not offering a "canned" solution. I'm telling you what I've found after many hours of research. Basically, I've read too many posts saying "everything is completely different and it's not possible" and I decided to call BS on that by providing some facts about the differences. I found it's not all different. It's very, very similar. As with anything posted on a forum, you can decide to use the information or you can ignore it.

There are 4 different "systems" involved with the ABS module

#1 -Wiring and sensors. A 98-00 C5 with AH has every wire required to be connected to the '01+ ABS. They are all there, all all connect to the same things and are all the same colors. There is only 1 thing that changes, well technically 2 changes.

Brake fluid pressure sensor - not the same, but this sensor will come in a used '01+ module. Well, it actually could be the same but I really can't be bothered researching it when a used '01+ ABS module should come with the one that is needed.

SWPS - not the same but everything I've read says the digital signals are the same and I'd bet money the analog part is what fails most of the time. Besides, if it doesn't work then change it to the newer one.


#2 -Hydraulics. Every C5 has the same dual master cylinder and the same 4 calipers at the wheels. One every C5 the lines feed from the dual master into the BPMV and then 4 lines run from the BPMV to each caliper. So, the lines are there, they just require re-routing.

#3 - Communications link. The ABS communicates with the BCM. So, there might be something different in the communications data that doesn't allow the pre-01 BCM to communicate. However, the BCM's in these cars can be swapped between any year. So, if it doesn't work just install a newer BCM. The only part I haven't checked into is that around 99 or 00 the reverse lockout changed from energize to release into energize to lockout. So, changing the lockout solenoid or using a relay to reverse the logic may be required to fix that. Not really a big deal to take care of.

#4 - PWM communications. The ABS sends and receives PWM signals with the PCM. These signals are the same for all years and it's already been proven this won't be an issue. The PCM's can be swapped between new and old cars and still work so there's no reason you can't go the opposite way and swap the ABS instead.

Now, having posted the above I can still understand someone having concerns about making the swap work. I know I could make it work. 100%. I would even bet money on it. I can't say who else would be qualified to do the swap and make it work but I know many people who work on these cars won't be. This isn't a beginners level project. Also, by reading Steve's post it seems he's willing to try but no-one wants to spend the money. If I was asked, I'd put my money on Steve pulling it off.

If I wasn't neck deep in my '69 C5/C6 Camaro project I'd invite you to bring your car and supply the parts and I'd get it working for you by spring.

 

So are you saying you would be willing to buy the parts back if it didn't work? Given a qualified installer like Steve.

 

No. Who in there right might would agree to those vague terms?

 

The SWPS on my 03 failed. I got the service active handling and traction control lights. I could reset the codes and it might stay off for a day or a week but always came back. It threw the SWPS code (1291) as well as the yaw rate sensor code (1284, 1285) I replaced the SWPS and that took care of the problem. I decided to take the unit apart and see what made it tick... and yes, I do have an engineering degree. The unit has 15 or 20 little copper tabs which come in contact with the steering shaft. It looked to me like you could clean up the little tabs with contact cleaner/ultra fine sand paper and that might make the unit work again. [like we did with slot cars when I was a kid] I don't know if anybody with the older units has tried this but that would be the first thing I would try before trying to rebuild the entire car for one stupid sensor. Good luck.

 

Thanx to all including lionelhutz for the detailed information.!

 

Got any pictures showing how this fingers are part of the electrical circuit. Nothing I've found points to those tabs being electrical but rather they appear to be for centering the sensor.