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Performance Plugs Void Warranty?

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Old Nov 16, 2002 | 12:50 PM
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Default Performance Plugs Void Warranty?

Was witnessing some detonation recently after I had my pistons re-ringed to stop oil "blow by," so I took my 2001 MN6 in for service. Dealer told me that I had performance plugs and that GM would not warranty repair the detonation without stock plugs. Ironically, I have had the same plugs on the car before AND after the re-ring service and the car had detonation problems before.

P.S. I have never changed plugs on this car (I ordered the car new from GM), so I am not even sure what the dealer is talking about. Has anyone ever taken shipment of a new Vette with non-factory plugs installed by a dealer?

I'm highly puzzled.... :confused: :confused: :confused: :confused:

-Dennis
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Old Nov 16, 2002 | 12:51 PM
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Default Re: Performance Plugs Void Warranty? (L76)

Oops - typo... I meant NEVER had detonation problems before. :rolleyes:

-d
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Old Nov 16, 2002 | 01:08 PM
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Default Re: Performance Plugs Void Warranty? (L76)

I would find another dealer.
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Old Nov 16, 2002 | 01:21 PM
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Default Re: Performance Plugs Void Warranty? (L76)

Sounds like your dealer is screwed up. First off, I can't imagine a spark plug voiding your warranty.
Go to another dealer...
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Old Nov 16, 2002 | 01:50 PM
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Default Re: Performance Plugs Void Warranty? (L76)

I'm highly puzzled too.

If you really do have an unmodified car, I'd have used the dealer's telephone and called GM on the spot and said "your representative is refusing warranty service on an as-delivered car" or is there more to this story than that?

Of course, the fact that the dealer is a bit of a idiot, assuming you really do have a stock car, does also suggest that you might want to take your toys and play somewhere else.
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Old Nov 16, 2002 | 01:56 PM
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Default Re: Performance Plugs Void Warranty? (C5~Missle)

Sounds like your dealer is screwed up. First off, I can't imagine a spark plug voiding your warranty.
Go to another dealer...
DITTO to that! :nono:
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Old Nov 16, 2002 | 02:38 PM
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Default Re: Performance Plugs Void Warranty? (Fang S-289)

It's not the first problem I have had with this dealer. The dealer has clarified though... the non-stock plugs do not void my warranty, but they will not perform the repair under the warranty with non-stock plugs. This is just plain :bs.

What's next... if I don't use Mobil 1 brand synthetic oil will they refuse warranty repairs on the engine either? :mad

However, I am still really perplexed here. I have never changed the plugs in the car (it only has 24k miles). Unfortunately I am on the road (my wife brought the car in for service)... I'll have to look at these non-stock plugs myself. My hunch... when the dealer re-ringed the pistons, they changed the plugs (using an appropriate plug for the application - but not the STOCK plugs). :mad
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Old Nov 16, 2002 | 04:55 PM
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Default Re: Performance Plugs Void Warranty? (L76)

What kind are they? GM wised up and put in non A/C plugs a few years ago. Do they even realize that?
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Old Nov 17, 2002 | 10:21 AM
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Default Re: Performance Plugs Void Warranty? (L76)

Some Vettes came with Denso plugs, others had AC plugs. My 01 had Denso (Japanese) from the factory.

I swapped to NGK while trying to eliminate Knock Retard between 5-5.5 RPM. Didn't help, but idles a little smoother.

BTW: When in doubt on KR, swap out the crappy stock valvesprings. I used 01 Z06 springs and the Dyno curve suddenly became nice and flat.
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