Listen to this!!!!
Safety Car
Joined: Jun 2005
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From: DFW This user does not support or recommend the product or service displayed in the ad to the right
It may have to do with the fact that the stock size nitto are smaller in diameter than the stock size goodyears. Do you have anyone local that would let switch wheels to see?
Pro
Joined: May 2007
Posts: 585
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From: Ocean County NJ
And that is where I would starting looking first. What did you do either electrically (to the computer) or physically (hit something under the hood) to have this problem?
Instructor
Joined: Apr 2005
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these cars were ment to be put on the track and i hit 140 legally at mid ohio how can they say they can't service a car they advertise as a track car because of a problem that happened on the track? i got my rotors replaced under warranty because of cracks caused by braking at the track and thats considered a wear item.
Safety Car
Joined: Jun 2005
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From: DFW This user does not support or recommend the product or service displayed in the ad to the right
these cars were ment to be put on the track and i hit 140 legally at mid ohio how can they say they can't service a car they advertise as a track car because of a problem that happened on the track? i got my rotors replaced under warranty because of cracks caused by braking at the track and thats considered a wear item.
Last edited by C6400hp; Jun 25, 2009 at 04:24 PM.
Racer
Joined: Jun 2006
Posts: 410
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From: Berwick Louisiana
I think that the tuner should figure this out. it is not on GM due to the non stock programming . It never ceases to amaze me that people want to blame GM after doing non OEM items, wheels/tires, tuning, programming. The AH/TC system works off of wheel speed sensors. If you change the OD of the tires, obviously the wheel sensors are going to see that and it will lead to problems just like this.
I see your point on changing tires, but if you read back a few posts, the OP had stock GYs on aftermarket rims when this problem first cropped up, so tire diameter and ratio weren't an issue. If tires and wheels are the cause then why aren't all those thousands of people who have changed rims and tires having the same problems? I have ZR1 repros with Nitto Invos in the stock sizes and I have no problems and I've had my car up to 145 on a track. Sounds like the OP has a sensor or wiring problem and the dealer he's taken it to, for what ever reason, doesn't want to deal with the problem.
Team Owner
Joined: Jan 2007
Posts: 22,136
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From: In the woods looking for my thrown putter.
St. Jude Donor '13, '15
I think that the tuner should figure this out. it is not on GM due to the non stock programming . It never ceases to amaze me that people want to blame GM after doing non OEM items, wheels/tires, tuning, programming. The AH/TC system works off of wheel speed sensors. If you change the OD of the tires, obviously the wheel sensors are going to see that and it will lead to problems just like this.
The problem lies in what the OP said earlier, "the day I added the headers is the day it all started" Now I may not be the smartest guy in the world, but the problem was caused by one of two things.
1. The header install (knocked a plug or sensor loose)
2. the tune (some parameter was changed that shouldn't have been or it was tuned incorrectly)
There is almost a ZERO chance that it was a coincidence that you started having these problems the day the headers were installed and one is completely independent of the other.
Last edited by Silverspeed; Jun 25, 2009 at 04:57 PM.
Thread Starter
Drifting
Joined: Apr 2009
Posts: 1,307
Likes: 26
From: Miami
I think that the tuner should figure this out. it is not on GM due to the non stock programming . It never ceases to amaze me that people want to blame GM after doing non OEM items, wheels/tires, tuning, programming. The AH/TC system works off of wheel speed sensors. If you change the OD of the tires, obviously the wheel sensors are going to see that and it will lead to problems just like this.
It didn't happen after the tune(It wasn't even a full tune).
It happened after the headers(installed at that dealer). Either way for your sake, lets say it was the tune and you take the car in paying out of your wallet...3 times....3 charges...0 result...Does that make it better for you?
If your sticking up for GM, that doesn't make it better for them either.
Also about the AH working off of the speed sensor...thats what the only reason the tuner F'ed with the tire size. He went up and down on sizes and I can say I dont think its that.( that detail was not tuned by Jeremy)
Last edited by SgtRod; Jun 25, 2009 at 05:27 PM.
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Safety Car
Joined: Jun 2005
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From: DFW This user does not support or recommend the product or service displayed in the ad to the right
Rod, I am trying to help you here, not be the devils advocate. i guess what I am telling you is the dealer is not going to get this issue resolved for you. There are too many things that are non stock for him to have to take responsibility or they just don't really care.
I think your best bet would be to borrow some stock wheels tires and set the pressure sensors then see if the problem still exists. If it does then you could move on to sensor/programming issues. If you were local I would gladly let you borrow mine and see what we find out.Good luck tracking it down
I think your best bet would be to borrow some stock wheels tires and set the pressure sensors then see if the problem still exists. If it does then you could move on to sensor/programming issues. If you were local I would gladly let you borrow mine and see what we find out.Good luck tracking it down
Last edited by C6400hp; Jun 25, 2009 at 05:53 PM.
Safety Car
Joined: Jun 2005
Posts: 3,989
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From: DFW This user does not support or recommend the product or service displayed in the ad to the right
How is this a tuner issue? The AH/TC is a totally separate system from the engine PCM. Different hardware and software. AH/TC works with the brakes and the anti lock computer, not the engine computer.
I see your point on changing tires, but if you read back a few posts, the OP had stock GYs on aftermarket rims when this problem first cropped up, so tire diameter and ratio weren't an issue. If tires and wheels are the cause then why aren't all those thousands of people who have changed rims and tires having the same problems? I have ZR1 repros with Nitto Invos in the stock sizes and I have no problems and I've had my car up to 145 on a track. Sounds like the OP has a sensor or wiring problem and the dealer he's taken it to, for what ever reason, doesn't want to deal with the problem.
I see your point on changing tires, but if you read back a few posts, the OP had stock GYs on aftermarket rims when this problem first cropped up, so tire diameter and ratio weren't an issue. If tires and wheels are the cause then why aren't all those thousands of people who have changed rims and tires having the same problems? I have ZR1 repros with Nitto Invos in the stock sizes and I have no problems and I've had my car up to 145 on a track. Sounds like the OP has a sensor or wiring problem and the dealer he's taken it to, for what ever reason, doesn't want to deal with the problem.
Safety Car
Joined: Jun 2005
Posts: 3,989
Likes: 5
From: DFW This user does not support or recommend the product or service displayed in the ad to the right
Aren't Invo's almost the exact same size as the Goodyears though? I have never heard of anyone having problems with an Invo switch.
The problem lies in what the OP said earlier, "the day I added the headers is the day it all started" Now I may not be the smartest guy in the world, but the problem was caused by one of two things.
1. The header install (knocked a plug or sensor loose)
2. the tune (some parameter was changed that shouldn't have been or it was tuned incorrectly)
There is almost a ZERO chance that it was a coincidence that you started having these problems the day the headers were installed and one is completely independent of the other.
The problem lies in what the OP said earlier, "the day I added the headers is the day it all started" Now I may not be the smartest guy in the world, but the problem was caused by one of two things.
1. The header install (knocked a plug or sensor loose)
2. the tune (some parameter was changed that shouldn't have been or it was tuned incorrectly)
There is almost a ZERO chance that it was a coincidence that you started having these problems the day the headers were installed and one is completely independent of the other.
Tuning for that header install could be the issue if something in AH/TC was changed. i am not even sure if that can be changed. I will let an experinced tuner answer that.
Last edited by C6400hp; Jun 25, 2009 at 05:56 PM.
Thread Starter
Drifting
Joined: Apr 2009
Posts: 1,307
Likes: 26
From: Miami
It is a tuner issue because the OP had someone dick around with the tire sizes in the tuning. Clearly it is not right or he has a wheel sensor going bad/bad connection to sensor. I mean, there are only so many things that can trigger AH messages. The likely candidates are wheels/tires, tuner changing settings, or bad wheel sensor/connection.
Tire sizes were changed AFTER the messages came on to Service Active Handling". This was done only in effort to fix it. Oh and it also did it with the Goodyears on
Thanks though,
Rod
Safety Car
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From: DFW This user does not support or recommend the product or service displayed in the ad to the right
Have you checked the connectors at the hub? Were there any error codes stored when they hooked up the tech 2? Do you know what they were?
Last edited by C6400hp; Jun 25, 2009 at 06:02 PM.
Safety Car
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From: DFW This user does not support or recommend the product or service displayed in the ad to the right
Thread Starter
Drifting
Joined: Apr 2009
Posts: 1,307
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From: Miami
This is great stuff! The dealer replaced 3 sensors already, the yaw being one of them and also an airbag sensor.
The service director told me that they were going to put a new ebcm to see if it would fix the problem.
What do you think? Would that do it?
The more I read that book you posted, the less I think it will
The service director told me that they were going to put a new ebcm to see if it would fix the problem.
What do you think? Would that do it?
The more I read that book you posted, the less I think it will
Safety Car
Joined: Jun 2005
Posts: 3,989
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From: DFW This user does not support or recommend the product or service displayed in the ad to the right
This is great stuff! The dealer replaced 3 sensors already, the yaw being one of them and also an airbag sensor.
The service director told me that they were going to put a new ebcm to see if it would fix the problem.
What do you think? Would that do it?
The more I read that book you posted, the less I think it will
The service director told me that they were going to put a new ebcm to see if it would fix the problem.
What do you think? Would that do it?
The more I read that book you posted, the less I think it will
Could be a bad EBCM. Do you have telescopic steering?
Thread Starter
Drifting
Joined: Apr 2009
Posts: 1,307
Likes: 26
From: Miami
Oh... sorry. No, I do not have telescopic steering but I already put in the clip just in case. I agree with all who have said to look for the problem to have occurred during the header install. I have told them over and over and they said that, NOPE there is no way because it was installed without incident.
