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sky 4 us · 04-24-2008, 09:38 PM

I can't speak for sure about the sky, but I know that they could not tell with my avalanche that I've had done for years. I plan on doing my sky soon. One other thing is the fact that they change the internal vin number of the tuned ECM. The dealer could not tell, on my truck that it was not the original ECM. They could however could mess up a tune if the "put an update flash in it" the guy who does my tunes will reflash the ECM for free if they do that. He also gets all the latest updates from GM and put on it when I send it to him.

04-24-2008, 09:38 PM	#2 (permalink)
sky 4 us Member Join Date: Apr 2008 Location: NW OHIO Posts: 23 My Photos: (0)	I can't speak for sure about the sky, but I know that they could not tell with my avalanche that I've had done for years. I plan on doing my sky soon. One other thing is the fact that they change the internal vin number of the tuned ECM. The dealer could not tell, on my truck that it was not the original ECM. They could however could mess up a tune if the "put an update flash in it" the guy who does my tunes will reflash the ECM for free if they do that. He also gets all the latest updates from GM and put on it when I send it to him. Last edited by sky 4 us : 04-24-2008 at 10:02 PM.