Hi
I looking for some help with my C5 with the traction control light on and a message service active handling. I took it to the dealer had it diagnosed as a pressure sensor is bad. They no longer can get the sensor so I was able to source it from the UK. Took it back to the dealer but the plug is different. I have previously read that some C5 had different sensors this a different plug.
I also read that a C6 sensor will work. Any help is appreciated.

 

Well what pressure sensor as there are many and what trouble code did you have ??…a dealer would know better than us if a part is interchangeable.

 

It is called brake pressure modulator in the ecu.
It’s is part of the traction control system.

 

It is part of the EBCM…the ECU is normally called the PCM/ECM also known as the Engine Computer…good luck !!…I don’t even know your model year…as a new members that is the minimum we should know.

 

There are eight model year C5s! 1997 t0 2004. The 97 to mid year 98s had the EBTCM mounted in the rear behind the differential. Those models are very unique and rare these days! After midyear 98, GM moved the EBTCM to the front. Between the radiator and engine/
The 97-2000 EBTCMs were labeled as Early Systems. The 2001-2004 were labeled late model systems and the late and early are significantly different.

There are two parts to the EBTCM. The mechanical/hydraulic side, Brake Pressure Modulator Valve (BPMV) and the Electreonics part of the module. They are bolted together as a unit and can be separated. The part that you are describing as being bad is screwed into the BPMV.
So, It's very important to always list your year C5, trim level and any other defining information, Example: Coupe, Convertible or Fixed Roof Coupe. You can also list the suspension option that you have Example: Base, Z-51 or ZO6. Or if its significantly modified from OEM, that is important to know.
If you can list where you live (state and or county) that helps also. You would be amazed at how many people live out of country and ask for help without ever devaluing that info..

When you have problems ALWAYS provide a list of DTCs that are currently being displayed! If you have TONS of old history DTCs, NEVER EVER be afraid to CLEAR THEM ALL and start a fresh list of DTCs. If something is wrong, TRUST ME, that DTC will for sure show back up! Clearing old DTCs makes troubleshooting much easier and less confusing.

DID YOU KNOW that you can sit in the driver's seat and pull up and read or clear any and or ALL C5 DTCs????? The C6 and later model year Corvettes can not do that!
You dont need any stinking Code Reader or the STEALERSHIP to read your DTCs!!
Here is the simple DIY procedure that you need to read your OWN DTCs:READING YOUR Engine Diagnostic Codes, YOUR SELF!

The Diagnostic Display Mode is entered with the following procedure:

1) Turn on the ignition but don't start the engine. NOTE! You can read the DTCs with the engine running and or driving down the road but it can distract you. BE careful! Some DTCs clear themselves when you turn the ignition OFF!

2) Press the RESET button to turn off any warning messages. (i.e. door open, trunk open ect)

3) Press and hold OPTIONS

4) While holding OPTIONS, press FUEL four times within a 10-second period.

Initially, on-board diagnostics go into an Automatic Mode which shows diagnostic codes in a pre-set sequence: PCM - TCS - RTD - BCM - IPC - RADIO - HVAC - LDCM - RDCM - SCM - RFA. All codes will be displayed for each. ( i.e. PCM = 4 codes) If none are present in a given module, you will see No More Codes on the display.

There are two kinds of diagnostic codes, Current and History designated with a letter suffix, “C” or “H”. A current C code indicates a malfunction is present and active in the module displaying data. A history code indicates a problem existed sometime in the last 40 or 50 ignition cycles. When not accompanied by a current code of the same number, it's potential evidence of a previous problem, now resolved, that was not removed by clearing the codes.

More likely it's an indication of an intermittent malfunction.

Intermittent codes are the most challenging of the diagnostics. An intermittent code may have happened once, may have happened more than once but is inconsistent or may be happening on a regular basis but not at the time the codes are displayed. History codes can also be caused by a current malfunction in a system that is not operating at the time codes are displayed. An example is the rear window defogger which doesn't operate until the Body Control Module detects engine rpm. For history codes set by a module that does not operate with the key on and engine off, a special diagnostic tool called a Scan Tester is necessary to properly diagnose the malfunction.

Once the system has displayed all modules, it goes into the manual mode which allows selection of each module using combinations of Driver Information Center buttons. Manual mode can also be entered during the automatic sequence by pressing any button except English/Metric (E/M). Once the display shows Manual Diagnostics, select a module by pressing the OPTIONS button to go forward or the TRIP button to go back. Once a module is selected, a code is displayed, and if more than one are present; press GAGES to go forward or FUEL to go back.

To exit the diagnostic mode at any time, press E/M. If you want to erase codes in a given module, press and hold the RESET button To reset the codes once in manual mode, press and hold RESET until it displays NO CODES Press OPTIONS to go to the next module. Repeat the steps until you have reset the codes in all the computer modules.

NOTE!! Only reset the codes IF you want to - it is NOT necessary to do this. Clearing a code does not repair a problem. You are simply erasing the evidence of it in the module's memory. If you clear the code/s,

and extinguish the Check Engine Light, your emissions status ready will NOT allow you to pass an emissions test until you have completed the required driving cycles.

Once you have the codes, the next question is: What to do with the information?

First, consult the factory service manual. Any serious C5 Do-It-Yourself owner should invest in the Corvette Service Manual of the appropriate model year. The Service Manual is really a requirement if you want to understand and work on your C5. You can GOOGLE the DTC and also find information on it.

Here is very good site that explains the DTCs:

http://www.corvette-web-central.com/C5DTCcode.html

http://www.obd-codes.com/trouble_cod...d-ii-codes.php

Make sure to include the H or C suffix!!

 

So, I have a 2000 C5 convertible with automatic transmission and live in South Carolina.
The ABS light and Traction control light will not shut off.
We put a computer on it, and it's telling us that the EBCM is the problem, but as you know, GM does not make a replacement part anymore.
What are my options at this point, because I cannot control the traction mode anymore, but it still drives just fine.

 

Well,,,,,,,,, First and foremost, READ AND LIST the DTCs for that module and any other DTCs that are being reported. That in itself will point you/us in the correct corrective actions. Just because ALL the lights are on DOES NOT mean that the module is bad. There are 20+ components in that system that if failed, would cause the same lights. Reading the DTCs will narrow down the problem to maybe the exact failed part.

I provided you a very detailed procedure on the C5 built in DTC Reading System operation. Took me an hour to type it all out. LOL (just kidding) I have it on hand for this very reason.
Unless you read and post your DTCs, it going to be very difficult for any of us to help you fix this without you firing the PARTS CANNON and spending tons of money. $$$$$$$$$$$

Clear ALL the old DTC. If you have never read or cleared them there may be a whole lot of old history codes listed! Take the car for a short drive (fully warm it up) come back and without turning off the ignition off, clear any displayed warnings/messages in the DIC by pressing and holding the "RESET" button until all the messages/warnings are extinguish. Then enter the DTC reading routine and read the DTCs for ALL the modules. List the codes that you get in the example format; Example; PCM P2334 C or BCM B1255 HC or U 1000 C

Once you have all the displayed DTCs, provide us the list and soon, you should be on the road to recovery. Anxiously awaiting your DTC report.

Bill