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Tuning / Diagnostics -- engine and transmission Tune and diagnostics for engines and auto transmission.

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Old 10-18-2012, 08:27 AM   #1
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Question So can I tune this thing or not??

At the dealer this morning for my oil change and I asked about what mods they are funny about, particularly exhaust and CAI. The guy I was talking to said no they won't void it but it's really not worth it unless your going to tune the car. I said, can't do that, that really will void the warranty.

He says and I quote, "You will just have to make sure to flash the tune back to stock, they won't be able to detect it that way." I asked if the cars have an audit trail on the computer and he told me no.


Everyone here has told me different, that the dealerships will know if I tuned the car. This guy, who seemed pretty genuine, tells me I have nothing to worry about.

HELP?!?!

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Old 10-18-2012, 08:37 AM   #2
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The guy you spoke to is W R O N G. He sounds like an oil lube tech. Which means he has no clue.
The dealer will always be able to tell if the ecm has been flashed.
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Old 10-18-2012, 08:38 AM   #3
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My dealer says they dont care either. Said they would put on the long tubes and headers and tune it accordingly even. They do performance mods. As far as the warranty if the parts are GMPP then they are covered otherwise that part isnt covered. GM will void warranty on the powertrain if they find you tuned, Apparently there is a check the tech can do and then it gets sent to GM and then GM replies with whether it has been tampered with. Whether this check is ever performed or not is anyones guess...? Ultimately its up to your dealer I guess.
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Old 10-18-2012, 08:39 AM   #4
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Originally Posted by Tayap79 View Post
At the dealer this morning for my oil change and I asked about what mods they are funny about, particularly exhaust and CAI. The guy I was talking to said no they won't void it but it's really not worth it unless your going to tune the car. I said, can't do that, that really will void the warranty.

He says and I quote, "You will just have to make sure to flash the tune back to stock, they won't be able to detect it that way." I asked if the cars have an audit trail on the computer and he told me no.


Everyone here has told me different, that the dealerships will know if I tuned the car. This guy, who seemed pretty genuine, tells me I have nothing to worry about.

HELP?!?!

The dealer can still see the tune in the ECM even if you flash it back to stock, on the V8s. The V6's they can't see it.

My dealer will still warranty my car with a tune but every dealer is different.
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Old 10-18-2012, 08:43 AM   #5
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Freaking frustrating.

I'd love to tune it but I'm paranoid about having a failure and not having my warranty honored.
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Old 10-18-2012, 08:45 AM   #6
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Freaking frustrating.

I'd love to tune it but I'm paranoid about having a failure and not having my warranty honored.
Don't tune it then. Every dealer is different, but they can tell if you flash it back. I've heard of some dealers giving owners flack over drop-in filters....
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Old 10-18-2012, 08:48 AM   #7
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Freaking frustrating.

I'd love to tune it but I'm paranoid about having a failure and not having my warranty honored.
got pay to play.... only politicians try to have us believe otherwise
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Old 10-18-2012, 08:50 AM   #8
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If I knew I would be around this dealer for the entire life of my warranty, I'd go ahead and tune it but with my job, I could only be here for another few months.
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Old 10-18-2012, 08:54 AM   #9
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i dont think its really up to the dealer...not when gm requests to see the cars ecm info before they warrenty a repair. it might not matter on a small issue, but the big issues that you REALLY dont want to pay for....well i doubt gm, or the dealer , will be covering those.
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Old 10-18-2012, 08:58 AM   #10
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If I knew I would be around this dealer for the entire life of my warranty, I'd go ahead and tune it but with my job, I could only be here for another few months.
The dealer may say they will warranty it, but if a major failure happens then GM has to make the call. If GM were to say no, I doubt the dealership would spend thousands out of their pockets.

I was told the same thing about putting the stock tune back on until they realized the ECM is is part of GDS, and that changed everything. That said, my car broke a valve spring at about 36k miles,while driving down the hiway. The repairs were made, no questions asked...BUT this isn't considered a major powertrain failure.
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Old 10-18-2012, 09:03 AM   #11
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Dealers keep all broken warranty parts for a certain amount of time. If GM calls them up and requests the part they send it in if not it gets trashed. It will still be broken. My buddy is a BMW master tech so I imagine its a little different but every time I talk to him about it he says they wont ever care...pretty much only get caught if the test that I have seen outlined bout performing an ECM number something or other check is performed by the tech and sent to GM, again im not sure if this ever happens.

I still havent tuned though....
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Old 10-18-2012, 09:09 AM   #12
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I personally know at least 5 guys who have had their warranty voided for tunes and mods.

One of the very first things my dealership asked me on the night i picked my car up was do you want some headers and a tune? I said will you warranty the car? I got crickets...
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Old 10-18-2012, 09:11 AM   #13
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For the V6 supposedly, they cannot tell if it is re-flashed. That is probably when he has heard & it has him confused. But on the SS they can tell, from what I have read on this forum.
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Old 10-18-2012, 09:15 AM   #14
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For the V6 supposedly, they cannot tell if it is re-flashed. That is probably when he has heard & it has him confused. But on the SS they can tell, from what I have read on this forum.
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Old 10-18-2012, 09:15 AM   #15
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One thing we do know is that they have to prove the non gm part caused the issue. The non gm part obviously isnt covered but if they cant prove your cut outs effed your valves then they have to cover the valves. If you added a axleback exhaust and your DIC stops working then obviously your DIC wil still be covered. The problem with a tune is that it affects the entire powertrain.
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Old 10-18-2012, 09:31 AM   #16
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Quote:
Originally Posted by Tayap79 View Post
At the dealer this morning for my oil change and I asked about what mods they are funny about, particularly exhaust and CAI. The guy I was talking to said no they won't void it but it's really not worth it unless your going to tune the car. I said, can't do that, that really will void the warranty.

He says and I quote, "You will just have to make sure to flash the tune back to stock, they won't be able to detect it that way." I asked if the cars have an audit trail on the computer and he told me no.


Everyone here has told me different, that the dealerships will know if I tuned the car. This guy, who seemed pretty genuine, tells me I have nothing to worry about.

HELP?!?!

You need to talk to the service manager, get a good relationship going with him. The service mgr at the dealership where I go is Mod Friendly. He will do his best to cover things under warranty. Before I tuned my car, I knew and understood that it could happen to where GM may not want to cover something because of the tune. Im OK with that. If your going to tune your car you should be prepared. I have the reserved plan that if something on my car fails, and GM will not cover it. Then that is the perfect reason/opportunity to upgrade the car.
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Old 10-18-2012, 09:39 AM   #17
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One thing we do know is that they have to prove the non gm part caused the issue. The non gm part obviously isnt covered but if they cant prove your cut outs effed your valves then they have to cover the valves. If you added a axleback exhaust and your DIC stops working then obviously your DIC wil still be covered. The problem with a tune is that it affects the entire powertrain.

Good luck with that. Ask member Birm about the dealer refusing to deal with his warped rotors because his car is cammed and modded up that they knew beforehand.
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Old 10-18-2012, 10:02 AM   #18
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Good luck with that. Ask member Birm about the dealer refusing to deal with his warped rotors because his car is cammed and modded up that they knew beforehand.
Depends on how far you are willing to go I guess or how much proof they have to give but I believe its covered that way under the magnuson moss act...?
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Old 10-18-2012, 10:09 AM   #19
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Quote:
Originally Posted by Tayap79 View Post
At the dealer this morning for my oil change and I asked about what mods they are funny about, particularly exhaust and CAI. The guy I was talking to said no they won't void it but it's really not worth it unless your going to tune the car. I said, can't do that, that really will void the warranty.

He says and I quote, "You will just have to make sure to flash the tune back to stock, they won't be able to detect it that way." I asked if the cars have an audit trail on the computer and he told me no.


Everyone here has told me different, that the dealerships will know if I tuned the car. This guy, who seemed pretty genuine, tells me I have nothing to worry about.

HELP?!?!

Some aftermarket engine performance products and modifications promise a way to increase the horsepower and torque levels of a vehicle's powertrain. The products may have detrimental effects on the performance and life of the engine, exhaust, emission system, transmission, and drivetrain.

Engine power enhancement products may enable the engine to operate at horsepower and torque levels that could damage, create failure, or reduce the life of the engine, engine emission system, transmission and drivetrain.

Damage, failure, or reduced life of the engine, transmission emission system, drivetrain or other vehicle components caused by aftermarket engine performance enhancement products or modifications cannot be covered under warranty.


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Old 10-18-2012, 10:11 AM   #20
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...Damage, failure, or reduced life of the engine, transmission emission system, drivetrain or other vehicle components caused by aftermarket engine performance enhancement products or modifications cannot be covered under warranty.


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Key word in bold...
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Old 10-18-2012, 10:15 AM   #21
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Depends on how far you are willing to go I guess or how much proof they have to give but I believe its covered that way under the magnuson moss act...?
The time and money of trying to enforce that would be more than buying some new rotors.

The vast majority of the time people simply suck it up and move on. A friend has some lighter mods and just recently used his launch control and yep you guessed it. Busted his tranny shaft. Did the mods cause this or the epic fail of the launch control feature? GM will say the mods. Car guys will say weak parts and launch control caused it.

His car is sitting on the rack as we speak. Warranty now voided and he is having it rebuilt properly.
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Old 10-18-2012, 10:15 AM   #22
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Good luck with that. Ask member Birm about the dealer refusing to deal with his warped rotors because his car is cammed and modded up that they knew beforehand.
Then member Birm should have hired a lawyer.

" The only time a new vehicle warranty can be voided is if an aftermarket part has been installed and it can be proven that it is responsible for a warranty claim. However, a vehicle manufacturer or dealership cannot void a warranty simply because an an aftermarket equipment has been installed on a vehicle"

They can't void your radio because of a tune. They can refuse to warranty part of your powertrain, sure. But the brakes are not attached to the computer. Now if his rotors were warped because he was tracking a high HP car on stock breaks then no, the dealer doesn't owe him warranty. If they warped under normal driving, then he should have hired a lawyer. (Just an example, what he should really do is buy better breaks)

OP, unfortunately we gotta pay to play. There are dealerships out that that will still help you out and warranty the car, but there are also plenty willing and ready to slap you naked on a warranty claim on a modified car.
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Old 10-18-2012, 10:22 AM   #23
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Then member Birm should have hired a lawyer.

" The only time a new vehicle warranty can be voided is if an aftermarket part has been installed and it can be proven that it is responsible for a warranty claim. However, a vehicle manufacturer or dealership cannot void a warranty simply because an an aftermarket equipment has been installed on a vehicle"

They can't void your radio because of a tune. They can refuse to warranty part of your powertrain, sure. But the brakes are not attached to the computer. Now if his rotors were warped because he was tracking a high HP car on stock breaks then no, the dealer doesn't owe him warranty. If they warped under normal driving, then he should have hired a lawyer. (Just an example, what he should really do is buy better breaks)

OP, unfortunately we gotta pay to play. There are dealerships out that that will still help you out and warranty the car, but there are also plenty willing and ready to slap you naked on a warranty claim on a modified car.

Again i say good luck with that. Easier and cheaper to just buy some rotors..

http://www.camaro5.com/forums/showthread.php?t=249307
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Old 10-18-2012, 10:23 AM   #24
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The time and money of trying to enforce that would be more than buying some new rotors.

The vast majority of the time people simply suck it up and move on. A friend has some lighter mods and just recently used his launch control and yep you guessed it. Busted his tranny shaft. Did the mods cause this or the epic fail of the launch control feature? GM will say the mods. Car guys will say weak parts and launch control caused it.

His car is sitting on the rack as we speak. Warranty now voided and he is having it rebuilt properly.
Likely correct, though the threat of hiring a lawyer may work...

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Old 10-18-2012, 10:40 AM   #25
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Now I want to ask my dealer about the mod thing.
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