My apologies that I was unable to find the answer on this forum, because I'm sure it's out there. I've read tons of posts on this forum as well as other C5 forums and still am unclear on my DIC C2115 code as well as if it could be contributing to my Traction Control issues.

Just a little history on my car....I bought a 99 Corvette Coupe about 2 months ago with 130,000 miles and many DIC codes related to everything from seat sensors to O2 sensors. I've got it down to just two codes now, one being the seat sensor and the other being this TPMS error. I've checked the harnesses in the door jambs, cleaned all my grounds, replaced exhaust system, knock sensors, oil pressure sensor, etc etc. All of the stuff I have resolved thus far is thanks to all of you great guys and the willingness to help others. I love the car and need a little more help to get her back to her rightful place at the top of the food chain. So here it goes....thanks in advance for the help.

Question 1: Is the C2115 code specific to the TPMS sensor in the wheel itself? I know I have on dead wheel sensor (part is on order) and when I had new tires installed, the dead sensor moved to my front right. I know this because when I perform the FOB relearn it honks on my front left, but won't honk at my front right tire. As a result I can't successfully relearn my wheels, except if I skip the front right and the system learns the right rear as the front right, etc.

Question 2: My Traction Control turns on and off in what appears to be random patterns. Sometimes it turns on/off when I make a slow turn, other times it has done it while sitting perfectly still at a street light. If I romp on it, the Competitive Driving or Active Handling message appears on the DIC. If I put the car in reverse and hit the gas, it lurches and acts like it runs out of power. If I push the traction control button on the console, it doesn't do anything even when held down for many seconds....and I tried replacing the console switch but didn't resolve the issue. I hope something I've mentioned above might trigger some suggestions as to what might be causing my traction control issues.

I am replacing that one wheel sensor in hope's of rectifying the C2115 DIC code, but my bigger fear is that it has nothing to do with the traction control issues I am having. I am concerned about driving it in the rain until I get that issue fixed.

 

Thanks guys....yes I've cleared the codes several times and this one keeps coming back as an HC while the others I have rectified are slowly dropping off and the remaining ones only have the H. I should have that new wheel sensor in a day or two so I'll go down and get that replaced then relearn and see what happens. I'll start doing some reading on the steering wheel position sensor as well in case that ends up being a path I have to go down. I know my telescoping steering wheel switch is broke (little tip is loose from the armature itself so maybe I can do all the repairs at once if it comes down to it. The 4-wheel alignment is a good suggestion as well, but the tires I replaced were due to age and not uneven wear like I typically associate with a misalignment, but still is an option for eliminating the issue hopefully.

Will post back up after new sensor is installed. Thanks again

 

Ok that's the procedure I have been following to clear them, but thought I read somewhere it takes like 40 drive cycles to clear the history codes so wasn't giving them much thought anymore. Makes sense they could be telling me something about the bigger picture though. I'll get the sensor replaced and post back up all of my codes including the H codes. Thanks again for all the help. I'm new to the Vette's and by no means want to come back as anything other than grateful for this forum.

 

Cool....thanks and will post back up soon.

 

Sorry for the delay in responding, but I've been in "Harmonic Balancer R&R Hell" for the last week. That is one heck of an ordeal especially when you realize you don't have all the tools you need. Long story short....I'm still trying to get rid of the infamous "Chirping" under the hood, but I did replace the wheel sensor and my traction control is working flawlessly now! I can push the button and it immediately toggles on/off.

 

Well spoke too soon!

As soon as I left work this afternoon and took a turn fast the traction control turned off and the switch would not turn it back on. Seems to have a mind of its own again. Dang it! So here's my codes:

P1637H- Generator L-Terminal Circuit
P1638H- Generator F-Terminal Circuit
(I don't remember having either of these before and I recently replced the alternator trying to eliminate my chirping noise)

C1241H - MAGNA STEER Circuit Malfunction
B2597H - Traction Control System Switch Circuit
B2177H - Seat Front Down Switch Shorted to Ground
B2860HC -Telescoping Column Position Sensor Failure

U1096H - Loss of Communications with IPC
U1064H - Loss of Communications with BCM
U1016H - Loss of Communications with PCM
(If memory serves correctly, these were C's a while back and I took the rubber accordian pieces loose in the door jambs looking for shorted wires)

C2115H - Left Rear TPM Sensor Malfunction

Now all that being said, I did have the battery cables loose and steering rack out of it doing the dampner replacement. Give me a couple days and I'll put in a new list of codes. Hoping it is less than this because that list makes me depressed now that you all are telling me 'H' codes aren't necessarily going away.

 

Update as of this morning....after a 35 minute drive to work....the Traction Control switch is still working(toggles on/off). I pulled into the parking garage and checked the codes on the DIC and the only code listed at all is B2860HC for the telescoping steering wheel. The physical swithc is broken on my Vette, wiggles around like the switch cap is not connected to the armature.

I'll provide another update after the drive home this afternoon.

 

Had some rain on the way home for about 5 minutes and then the sunshine was out with mist off the roads. Immediately I noticed the Traction control was not toggling on/off when I pushed the switch so I started watching for codes as I drove (I know not the safest thing to do). I got a new code on the first code search: B2597HC and I immediately tried reseting it, and my switch didn't work still and I checked the codes again and still had that code along with the other two I mentioned above. I continued my drive looking for new codes and never gt on despite fast turns and giving it hard full throttle a couple times. Any ideas? Really annoying to see that traction control message indicating on/off randomly.

 

I think my car is a vampire! The traction control was working again this morning while I drove to work in the dark. Still has the codes because I didn't reset them last night after I parked it.

 

There's some truth to my vampire comment! I just figured out that when my headlights are on it works fine. Turn off the lights and then I have the problems with traction control. Hoping you guys have enough details to help me out.

 

TTT...surely someone has experienced this before...right?

 

check your grounds, then check them again. very important that these components have a good ground. sounds to me as if you have too many issues with electronics to be several bad sensors or components. make sure you check the condition of the negative batt cable.

 

I'm down to only a couple codes now so does that still mean I have a ground issue? The only one I've been unable to locate is one that I think is in a rear wheel well somewhere. The others I have taken off and wire wheeled the surfaces and reconnected. I'm thinking you are right though because when I the TCS on/off I can see a very faint change in the illumination like a short or loss of voltage through a bad ground. But that being said, you would think the issue would be present when the headlights are on with a voltage drain rather then when they are off and more voltage is available on the circuit.

 

i have 110K 0n my 03. i bought it 2 months ago with 105. i have replaced the oil press sender due to pegged and i have had an intermittent tract cont, act hand, and pull key message. i have too much confidence in GM electronics to think that these systems just simply go bad. i have studied this forum to attempt to get an education and noticed way too many problems caused by poor ground. after cleaning the ground to the neg batt term and cable all of my issues have cleared up. you are correct though you would think that the most issues would be with the lights on, pulling more amperage, therefor requiring a better ground. i still say check those ground areas and neg cable integrity again, no $ just a little time. GL

 

Eureka!!! I've solved my traction control issue and wanted to update the post in hopes that others might benefit from it. I got home the other day and just as I was pulling in the garage my electrical started freaking out in the car....radio not turning off, lights flickering, traction control going on/off rapidly, hatch not opening, fog light switch not responding, etc etc. My first attempt at isolating the issue took me to the fuse panel under the floorboard on pass side. As soon as I touched the kick board my hand was wet...and once I opened the kickboard there was pristine water everywhere! Ended up being that after I had my A/C serviced and the temps were getting higher here in Texas the A/C was producing more condensation. My drain on the pan was clogged on the firewall and when I would turn left the water would somehow "slosh" out and get my computer wet along with the relays under there with it. I fixed the drain and dried everything out and low and behold my traction control erratic issue was resolved! I can now turn the T/C on/off whenever I want and it doesn't just randomly switch on/off anymore. Guess prior to the A/C service there was just not enough condensation off the A/C to make my floorboard wet, but enough to get the computer wet.

Hope this helps...can't hurt to check it if you are having issues like I did. The Corvette shop I use couldn't even figure it out!

 

Good to know! Thanks for updating