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Old 09-17-2009, 05:38 PM   #1
chad.orourke
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Default Dealer giving me warranty trouble-RESOLVED

Car:

2007 Corvette M6 Z51

Mods:

Kooks long tube headers
Billy-Boat bi0mode exhaust

Installation Date:

2 months ago


Problem:

So I was recently on a back road and suddenly heard a clicking noise coming from the engine compartment. When I lifted the hood there was no visible problem but when you hit the accelerator pedal there is an audible clicking noise. To me it sounds like there is a rock in the plastic intake, if you can imagine what that sounds like. It is VERY noticeable on the drivers side, and barely audible on the passenger side. To me this means valve-train or intake. I checked for obvious things like something touching but alas it was internal.

Note* I have never heard what a spun bearing or a bent rod sounds like in a car.

So after the hobby mechanic inspection was complete I drove it in to the dealership to get it looked at. A day goes by and the dealership calls back and says they cannot work on the car because it has been modified, which I told the dealership service attendant up front. According to them they cannot even touch it because their engineering department says it has been modded, which means they cannot even tell me what is wrong with the car.

So what I am left with is a car that they cant tell me what is wrong with it because engineering said no, but how can they deny the warranty when they don't even know what the problem is?

I cant get the car diagnosed to even see if the problem is warranty related...PLEASE HELP


-Chad


UPDATE
Audio and video of the interesting problem can be seen here at you tube.
http://www.youtube.com/watch?v=O5chV3KOGuk


.

Last edited by chad.orourke; 09-20-2009 at 10:17 PM. Reason: added video link
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Old 09-17-2009, 05:39 PM   #2
chad.orourke
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I will post a video with sound of the problem in the coming days.
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Old 09-17-2009, 06:06 PM   #3
Mikeg4572
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Take it to another dealer, those are pretty modest modifications.
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Old 09-17-2009, 06:07 PM   #4
chad.orourke
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Wont it be in some master computer database that all GM dealers see? The engineering department evidently got involved.

Also of note they want 4grand to start tearing down the motor. I have not given them the go ahead.

Last edited by chad.orourke; 09-17-2009 at 06:09 PM.
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Old 09-17-2009, 06:10 PM   #5
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1- Take it to another dealer and post this dealer's name here. There is no reason they should be denying you warranty work; in fact, it is ILLEGAL for them to deny you work untill they can actually PROVE that whatever is wrong with your car was caused by your mods.

2- A ticking sound from a car with headers is either normal, if its quiet, because the thin walls of aftermarket long tube headers don't isolate sound as well as the thick cast iron manifolds, so you CAN hear some valvetrain noise with them, or it could be an exhaust leak. Check the area around your headers carefully for exhaust leaks. If you used the gaskets that came with the headers, then I can almost guarantee that is what the problem is; those gaskets are junk and will blow almost instantly; the factory gaskets are the ones to use.

3- If that is not the problem run a compression test and probe around the engine with a mechanic's stethoscope so you can identify where the noise is coming from. Take control of your troubleshooting; this is very simple stuff.
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Old 09-17-2009, 06:13 PM   #6
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Old 09-17-2009, 06:14 PM   #7
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Quote:
Originally Posted by chad.orourke View Post
Wont it be in some master computer database that all GM dealers see? The engineering department evidently got involved.

Also of note they want 4grand to start tearing down the motor. I have not given them the go ahead.
Has the car been tuned?
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Old 09-17-2009, 06:15 PM   #8
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Quote:
Originally Posted by PowerLabs View Post
1- Take it to another dealer and post this dealer's name here. There is no reason they should be denying you warranty work; in fact, it is ILLEGAL for them to deny you work untill they can actually PROVE that whatever is wrong with your car was caused by your mods.

2- A ticking sound from a car with headers is either normal, if its quiet, because the thin walls of aftermarket long tube headers don't isolate sound as well as the thick cast iron manifolds, so you CAN hear some valvetrain noise with them, or it could be an exhaust leak. Check the area around your headers carefully for exhaust leaks. If you used the gaskets that came with the headers, then I can almost guarantee that is what the problem is; those gaskets are junk and will blow almost instantly; the factory gaskets are the ones to use.

3- If that is not the problem run a compression test and probe around the engine with a mechanic's stethoscope so you can identify where the noise is coming from. Take control of your troubleshooting; this is very simple stuff.
Good advice.. It does sound like an exhaust leak.
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Old 09-17-2009, 06:42 PM   #9
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GM is denying warranty work on modified cars. The long tube headers required the removal of the cats which is a federal emissions law violations. If you had a tune that's another problem they will deny warranty work for. They are looking at extra hp that the engine and drive train was not designed for in addition to possible fine for emissions problem. It's the new GM.
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Old 09-17-2009, 07:44 PM   #10
chad.orourke
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Quote:
Originally Posted by PowerLabs View Post
1- Take it to another dealer and post this dealer's name here. There is no reason they should be denying you warranty work; in fact, it is ILLEGAL for them to deny you work untill they can actually PROVE that whatever is wrong with your car was caused by your mods.

2- A ticking sound from a car with headers is either normal, if its quiet, because the thin walls of aftermarket long tube headers don't isolate sound as well as the thick cast iron manifolds, so you CAN hear some valvetrain noise with them, or it could be an exhaust leak. Check the area around your headers carefully for exhaust leaks. If you used the gaskets that came with the headers, then I can almost guarantee that is what the problem is; those gaskets are junk and will blow almost instantly; the factory gaskets are the ones to use.
It def is not quiet. It is loud enough that the car is ebarassing to drive down the road. I did use the factory gaskets, but it certainly did not sound like an exhaust leak. This is good advice though, and may be worth a shot regardless. I will have to get the car back from the dealer and see if I can get a sound clip or youtube video posted. Can you describe a blown header gasket sound?

Quote:
3- If that is not the problem run a compression test and probe around the engine with a mechanic's stethoscope so you can identify where the noise is coming from. Take control of your troubleshooting; this is very simple stuff.
I thought it was simple stuff that maybe a dealer could handle while I was getting that pesky airbag light fixed for the 5th damn time.
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Old 09-17-2009, 07:45 PM   #11
chad.orourke
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Quote:
Originally Posted by PowerLabs View Post
1- Take it to another dealer and post this dealer's name here. There is no reason they should be denying you warranty work; in fact, it is ILLEGAL for them to deny you work untill they can actually PROVE that whatever is wrong with your car was caused by your mods.
Can you show this to me in writing though? I have been struggling to find this very thing.

Again thanks for the advice
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Old 09-17-2009, 07:46 PM   #12
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Quote:
Originally Posted by Silverspeed View Post
Has the car been tuned?
Yes the car was tuned. I debate the quality of it, however.


On this note I called the tuner today. He mentioned he set my redline to 7000 and my shift light in the HUD to 6800.DOH! Thoughts on the long term effects of this?
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Old 09-17-2009, 07:49 PM   #13
chad.orourke
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Quote:
Originally Posted by VET4LES View Post
GM is denying warranty work on modified cars. The long tube headers required the removal of the cats which is a federal emissions law violations. If you had a tune that's another problem they will deny warranty work for. They are looking at extra hp that the engine and drive train was not designed for in addition to possible fine for emissions problem. It's the new GM.

I agree this is their reasoning and they are trying to avoid ANOTHER bankruptcy by saving some cash I guess.
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Old 09-17-2009, 07:51 PM   #14
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Quote:
Originally Posted by chad.orourke View Post
Yes the car was tuned.
The official statement from GM is floating around here somewhere, but from a quick search I found this, just FYI

http://www.g8board.com/forums/showthread.php?t=12605
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Old 09-17-2009, 07:53 PM   #15
'06 Quicksilver Z06
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Quote:
Originally Posted by chad.orourke View Post
Car:

2007 Corvette M6 Z51

Mods:

Kooks long tube headers
Billy-Boat bi0mode exhaust

Installation Date:

2 months ago



Problem:

So I was recently on a back road and suddenly heard a clicking noise coming from the engine compartment. When I lifted the hood there was no visible problem but when you hit the accelerator pedal there is an audible clicking noise. To me it sounds like there is a rock in the plastic intake, if you can imagine what that sounds like. It is VERY noticeable on the drivers side, and barely audible on the passenger side. To me this means valve-train or intake. I checked for obvious things like something touching but alas it was internal.

Note* I have never heard what a spun bearing or a bent rod sounds like in a car.

So after the hobby mechanic inspection was complete I drove it in to the dealership to get it looked at. A day goes by and the dealership calls back and says they cannot work on the car because it has been modified, which I told the dealership service attendant up front. According to them they cannot even touch it because their engineering department says it has been modded, which means they cannot even tell me what is wrong with the car.

So what I am left with is a car that they cant tell me what is wrong with it because engineering said no, but how can they deny the warranty when they don't even know what the problem is?

I cant get the car diagnosed to even see if the problem is warranty related...PLEASE HELP


-Chad
Since you have had the headers now for 2 months, its doubtful that its normal valvetrain noise.

You should have noticed that and grown used to it by now.

No, this is something new, in all probability.

If the car was tuned, and you say so above that it was, then this discussion is over......You may as well open your wallet, or get out your checkbook. I hate to say it, But...you're $#!+ out of luck.

GM is taking a hard line on aftermarket calibrations. Plus the car has headers on it. They may have already discovered the aftermarket calibration and that may be part, or all of the reason why they aren't touching it.

Hind sight is always 20/20 and I know this is no consolation to you, but, don't mod it, unless you are prepared to fix it.

Quote:
Originally Posted by chad.orourke View Post
Yes the car was tuned. I debate the quality of it, however.


On this note I called the tuner today. He mentioned he set my redline to 7000 and my shift light in the HUD to 6800.DOH! Thoughts on the long term effects of this?
Good luck with the repairs. Its always sad, when mods go bad.

Last edited by '06 Quicksilver Z06; 09-17-2009 at 08:00 PM.
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Old 09-17-2009, 07:59 PM   #16
chad.orourke
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Quote:
Originally Posted by '06 Quicksilver Z06 View Post
Since you have had the headers now for 2 months, its doubtful that its normal valvetrain noise. You should have noticed that and grown used to it by now.

No, this is something new, in all probability.

If the car was tuned, and you say so above that it was, then this discussion is over...... I hate to say it, But...you're $#!+ out of luck.

GM is taking a hard line on aftermarket calibrations. Plus the car has headers on it. They may have already discovered the aftermarket calibration and that may be part, or all of the reason why they aren't touching it.

Hind sight is always 20/20 and I know this is no consolation to you, but, don't mod it, unless you are prepared to fix it.

Good luck with the repairs. Its always sad, when mods go bad.
And I am prepared to do just that, but when I go in to a dealer BEFORE the mod and ask "How will my warranty be affected with headers and an after market exhaust", and they answer "it wont" then this happens i get upset.
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Old 09-17-2009, 08:04 PM   #17
'06 Quicksilver Z06
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Quote:
Originally Posted by chad.orourke View Post
And I am prepared to do just that, but when I go in to a dealer BEFORE the mod and ask "How will my warranty be affected with headers and an after market exhaust", and they answer "it wont" then this happens i get upset.
I don't see above where you say that you mention the tune while you were making this inquiry. You mention "headers and aftermarket exhaust" above, but "tune" is absent.

Furthermore, the warranty is not your dealer's to give. It is GM's.

Like I say, they MAY have discovered that it has been tuned and this could be the reason why they aren't even touching it.

I'd bet dollars to doughnuts that they have discovered that it has been tuned.

Otherwise, if they had told you what you say above, I can't see them going so far as to not even touch it.

They would at least look at it......unless they know already that IF it is a major failure, that they are going to have to show the regional rep that it had a stock calibration in it before they can get paid to do warranty work on it.

If they could show that, then they'd be jumping on it in all probability, especially after what they told you.

The probable reason why they aren't touching it, is because they know that they are going to have difficulty getting paid by GM for any warranty work.

Now how the *&^% would they know that????

Last edited by '06 Quicksilver Z06; 09-17-2009 at 08:12 PM.
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Old 09-17-2009, 08:16 PM   #18
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Quote:
Originally Posted by chad.orourke View Post
Wont it be in some master computer database that all GM dealers see?
Yes, and its probably already in there.

Quote:
Originally Posted by chad.orourke View Post
The engineering department evidently got involved.
What is the "engineering department" and what do they do?

Quote:
Originally Posted by chad.orourke View Post
Also of note they want 4grand to start tearing down the motor. I have not given them the go ahead.
Were it me, I'd give the bill to whomever tuned it.
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Old 09-17-2009, 08:17 PM   #19
chad.orourke
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Quote:
Originally Posted by '06 Quicksilver Z06 View Post
I don't see above where you say that you mention the tune while you were making this inquiry. You mention "headers and aftermarket exhaust" above, but "tune" is absent.

Furthermore, the warranty is not your dealer's to give. It is GM's.

Like I say, they MAY have discovered that it has been tuned and this could be the reason why they aren't even touching it.

I'd bet dollars to doughnuts that they have discovered that it has been tuned.

Otherwise, if they had told you what you say above, I can't see them going so far as to not even touch it.

They would at least look at it......unless they know already that IF it is a major failure, that they are going to have to show the regional rep that it had a stock calibration in it before they can get paid to do warranty work on it.

If they could show that, then they'd be jumping on it in all probability, especially after what they told you.

The probable reason why they aren't touching it, is because they know that they are going to have difficulty getting paid by GM for any warranty work.

Now how the *&^% would they know that????
You act like Im trying to pull one over on YOU, or are you maybe a GM employee hiding in here?
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Old 09-17-2009, 08:24 PM   #20
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Quote:
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You act like Im trying to pull one over on YOU, or are you maybe a GM employee hiding in here?
Don't shoot the messenger for telling you something that you didn't want to hear.

You asked for help.

The best help anyone can give you at this point is to tell you to buckle down and pay for the repairs, because its sounding like they have discovered the tune.

And if thats the case, it wouldn't matter if I were Fritz Henderson. Being paranoid about who is working for GM is not helping you now.

At any rate, if you have really big balls, you can try taking it back to stock and taking it back in on the off chance that they have not already discovered the non stock calibration in it.

But I would be very leery of that, and wouldn't give it much chance of working. Number one, its fraud, and number two, if they already know its been tuned, then what would be the point? They aren't going to look at it again with the possibility of repairing it under warranty anyway if they already know that it has been tuned.

Last edited by '06 Quicksilver Z06; 09-17-2009 at 08:43 PM.
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