[Rhyder]

Originally Posted by el ess X

Exactly correct. And this is what they can use to justify denying the coverage on a tune. If you are going in to claim a warranty repair on an affected system with the aftermarket software controlling that system where the component failed on it, they can prove by virtue of the software fault causing the issue (if that's what it was). I'm betting GM's lawyers will be better than yours. Remember the BCM, ECM, etc. talk to each other. I'm not a tuning expert, but if there's cross-talk between the computer controlled systems and part of it has an aftermarket tune on it, they could reasonably ascertain that the non-approved software could be the source of the issue. (I do agree it sounds kind of a reach to say the tune affected the airbag but I don't know if it actually could or not.) But your drivetrain warranty...poof! Gone.

GM could care less if you tune your car. But if you break an engine part and try to claim it under warranty, and they find a tune on it, then reasonable deduction is that the tune was done to increase the performance outside the certified/validated parameters of the OEM software, thus putting more stress on the engine/drivetrain components. Thus a failure of any of these components and subsequent warranty claim could and probably will be denied.

Not ALL dealers will take it to the extreme, but if one does and voids your warranty, good friggin' luck getting it un-voided. And don't bother going to another dealer, once they void it, they'll ALL know it when they pull up the VIN.

I'm not against tunes. I'm not against mods or performance enhancers. But I do find it very sad that someone would expect to get a problem fixed under warranty when the aftermarket part DID, in fact, cause the problem. Personal responsibility comes into play here. DON'T muck with the ECM software if you want to ensure you keep the warranty intact. But don't expect sympathy from me if you did mess something up and expect GM to cover it under warranty and then they void your warranty.

So your stance is that a tune causes damage to the vehicle?