Warranty Denied

[AG1LE]

Sounds like a good opportunity/excuse to upgrade the rear end

[Unreal]

Sadly once it is flagged in the GM system going to another dealer won't do anything. Sucks.

[camguynj]

You said they denied warranty because of modiifcations. Based on the Magnisum-Moss act/law the dealer has to PROVE what mod caused the problem. If they says it was the tune then INSIST they dyno your car to PROVE its hp & torque exceeded GM hp & torque specs that the rear wasn't made to handle.

[Emvici]

Not to be sound against you all-American, as I am just saying what I think is truthful. but unless you could know how you drove it, people would have to assume you drove it hard. Also would the mods you did to the car potentially add additional stress to the rear end?, if so, then you could see why they are standing where they stand.

[jessrayo]

I would go with the car was not making the noise until THE DEALERSHIP swapped the fluid, this car does not take the same diff fluid as the regular "camaro". If they can't cover a fluid change on a modified car then they should not have done it in the first place. I'm guessing they put the wrong fluid in there. If you have the receipts for their work they should have part numbers in there. Try to check it out.

If it is just noise turning, it probably just needs another fluid change with ZL1 fluid. I'm pretty sure it is not broken....I beat the crap out of mine and the clutches just pick up some slack..... mine got a little louder but ran 200 mph with 1400whp on it.

If they won't do any thing, I would order the correct fluid and try to flush it a couple of times before I bought a new one....

[Scott@Bjorn3D]

Originally Posted by camguynj

You said they denied warranty because of modiifcations. Based on the Magnisum-Moss act/law the dealer has to PROVE what mod caused the problem. If they says it was the tune then INSIST they dyno your car to PROVE its hp & torque exceeded GM hp & torque specs that the rear wasn't made to handle.

You guys throw that act up all the time, but when something clearly states that doing something will void the warranty that act does not work. It worked back when car warranties were kind of vague. They are not that way anymore.

[sbubbaklein]

Originally Posted by jessrayo

I would go with the car was not making the noise until THE DEALERSHIP swapped the fluid, this car does not take the same diff fluid as the regular "camaro". If they can't cover a fluid change on a modified car then they should not have done it in the first place. I'm guessing they put the wrong fluid in there. If you have the receipts for their work they should have part numbers in there. Try to check it out.

If it is just noise turning, it probably just needs another fluid change with ZL1 fluid. I'm pretty sure it is not broken....I beat the crap out of mine and the clutches just pick up some slack..... mine got a little louder but ran 200 mph with 1400whp on it.

If they won't do any thing, I would order the correct fluid and try to flush it a couple of times before I bought a new one....

I agree, no problem till fluid change, probably wrong fluid. Different fluids depending on axle, what part number is charged out on RO.

[pickwithaustin]

Originally Posted by jessrayo

I would go with the car was not making the noise until THE DEALERSHIP swapped the fluid, this car does not take the same diff fluid as the regular "camaro". If they can't cover a fluid change on a modified car then they should not have done it in the first place. I'm guessing they put the wrong fluid in there. If you have the receipts for their work they should have part numbers in there. Try to check it out.

This is an extremely good point.

[The_Blur]

First and most importantly, your dealer is an idiot. This is an undeniable fact. Dealers are typically* scared of things they don't see everyday, which includes alien parts on their run-of-the-mill cars. They want to see the same stuff for in the shop that they see on the showroom floor. Their minds are closed to new things, even if those things are well within the tolerances of their own quality assurance standards.

All of this aside, you are limited by a partially corrupted system. In legal terms, they have to prove that your parts led to the failure or discrepancy. In financial terms, if they break the law, then you have to sue in order to get your way, thus costing you way more than it will cost to repair this part. From the customer service side of things, GM is in a strange spot. They've got a lot of family cars and a few performance cars, but they all have the same warranty. They never advertised their parts to handle a lot of power, and that also means that you can't expect the parts to work right with your changes. Even if they did advertise the potential to work up to that horsepower range, the stresses experienced by the affected systems might not fail immediately, instead taking time to break. This is why most high-performance brands offer shorter warranties. The alloys are the same, but they experience relatively higher stresses, eventually resulting in comparably earlier failure.

*dealers—I say this with few exceptions, some of whom are on the forum and others I have met personally.

Originally Posted by jessrayo

I would go with the car was not making the noise until THE DEALERSHIP swapped the fluid, this car does not take the same diff fluid as the regular "camaro". If they can't cover a fluid change on a modified car then they should not have done it in the first place. I'm guessing they put the wrong fluid in there. If you have the receipts for their work they should have part numbers in there. Try to check it out.

If it is just noise turning, it probably just needs another fluid change with ZL1 fluid. I'm pretty sure it is not broken....I beat the crap out of mine and the clutches just pick up some slack..... mine got a little louder but ran 200 mph with 1400whp on it.

If they won't do any thing, I would order the correct fluid and try to flush it a couple of times before I bought a new one....

Listen to this guy.

[Z/28Dan]

Originally Posted by jessrayo

I would go with the car was not making the noise until THE DEALERSHIP swapped the fluid, this car does not take the same diff fluid as the regular "camaro". If they can't cover a fluid change on a modified car then they should not have done it in the first place. I'm guessing they put the wrong fluid in there. If you have the receipts for their work they should have part numbers in there. Try to check it out.

If it is just noise turning, it probably just needs another fluid change with ZL1 fluid. I'm pretty sure it is not broken....I beat the crap out of mine and the clutches just pick up some slack..... mine got a little louder but ran 200 mph with 1400whp on it.

If they won't do any thing, I would order the correct fluid and try to flush it a couple of times before I bought a new one....

This x1000

[Chevy Fanatic]

Originally Posted by All-American ZL1

I have a 2013 M6 ZL1. Like many other people I noticed the loud rear end. I had my dealership evaluate it around 5,000 miles, and they said it was normal. Over the next year I made some small modifications to the car, Pulley, headers, tune.

I would remind them that you first brought the issue to their attention PRIOR to you making any mods to the car. If you have receipts to support mods were performed AFTER your first complaint at 5,000 miles it is not your fault the dealer misdiagnosed the complaint and dismissed it as normal.

[CAM....ZL1]

Originally Posted by lbls1

Only problem with a different dealership is that GM may have flagged your VIN from your previous warranty claim attempt (they have been known to do this). Your best course of action could be to try a different dealership and speak with your municipality's Attorney General to see whether you can fight the denial. You would need to prove that your modifications did not cause the failure.

Good luck. GM has become extremely strict and selective with their warranty coverage. At their worst (2009) some dealerships weren't even covering legitimate claims (truss me I know firsthand).

If it was flagged by GM he might as well forget about the warranty for good.
I was flagged on my car and it doesn't matter where you take it. I was told GM won't even let the dealer work on it if you pay out of pocket. A second dealer is gonna replace my SC couple, I buy the part he provides the labor with no warranty from the dealer on their work.

[All-American ZL1]

I was thinking the same thing as Jessrayo that they may have put in the wrong fluid, I picked it up today and I'm going to try another dealership to see if I get any different response. I appreciate everyone's input. Part of the reason that I posted this is to help other people out there who were trying to decide on modding their car. Thanks.

[Steel02001]

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