Have had my 2008 C6 for 5 days. Love it!



I have read where a tune guy comes to town and tunes
Corvettes, if I remember it was expensive.

Sometimes on the Forum, posts state, "Get it Computer Tuned"
and that will fix it.

Does it void the Dealer Warranty?

Thanks

Charlie in Arizona

 

We just discussed this at length a few days ago. Do a search for void warranty tune. I don't really want to go into it again.

 

I want to keep my warranty, in fact buy an extended warranty.

 

yes.

When alteration to the GM-released engine or transmission control calibrations occurs, it subjects powertrain and driveline components (engine , transmission, transfer case, driveshaft and rear axle) to stresses that were not tested by General Motors. It is because of these unknown stresses, and the potential to alter reliability, durability and emissions performance, that GM has adopted a policy to cancel any remaining warranty coverage to the powertrain and driveline components whenever the presence of a non-GM (aftermarket) calibration is confirmed - even if the non-GM control module calibration is subsequently removed.

Warranty coverage is based on the equipment and calibrations that were released on the vehicle at time of sale, or subsequently updated by GM. That’s because GM testing and validation matches the calibration to a host of criteria that is essential to assure reliability, durability and emissions performance over the life of the warranty coverage and beyond. Stresses resulting from calibrations different than those tested and released by GM can damage or weaken components, leading to poor performance and or shortened life.

Additionally, non-GM (aftermarket) issued engine control modifications often do not meet the same emissions performance standards as GM issued calibrations. Depending on state statutes, individuals who install engine control module calibrations that put the vehicle outside the parameters of emissions certification standards may be subject to fines and/or penalties.

This bulletin outlines a procedure to identify the presence of non-GM (aftermarket) calibrations. GM recommends performing this check whenever a hard part failure is seen on internal engine or transmission components, or before an engine assembly or transmission assembly is being replaced under warranty. It is also recommended that the engine calibration verification procedure be performed whenever diagnostics indicate that catalytic converter replacement is indicated.

In May 2009, the PQC will begin piloting a process to confirm the ECM/PCM calibration is GM issued. Beginning on May 18, 2009, the PQC will require a picture of the engine calibration verification screen, as outlined in this bulletin, before authorizing any V8 gas powered engine replacement.

If a non-GM calibration is found and verification has taken place through GM, the remaining powertrain and driveline warranty will be cancelled and notated in GMVIS and the dealership will be notified.

 

If the dealer proves that the tune resulted in the failure, yes they can void your warranty.

 

In a GM vehicle, the presence of the tune (or software that was installed at one time) will result in total powertrain warranty branding, if caught.

 

This is the only legal truth.

 

This is from GM bulletin #09-06-04-026


That pretty much says it in black and white.

 

 

 

Here's the deal. If you have to ask because you're concerned it might void the warranty then DON'T DO IT. As with you, I want to keep my powertrain warranty so anything that might void it I won't do. You'll get different opinions about it. You'll hear people quote the MM act, others will say the dealer/GM won't be able to tell it's there. Other things you'll hear: talk to your dealer / find a friendly service manager etc etc.. Is it worth taking the chance just for a tune ??? You have to decide that for yourself.