The front collision alert doesn't work at all. It is supposed to light up and make a sound to warn that you are approaching another car to fast, it doesn't. The indicator that lights up green to show that there is a car in front of you should turn amber if you get to close, it doesn't. This is an option that I bought as a safety device or something to assist in my safe driving. I took it back to the dealer and the tech said that per the gm technical document that it worked as it should, even though the service...
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advisor and the tech agreed that it didn't work at all. I have a copy of the service manual document, number 3819903, and mine doesn't perform at all like the document says it should. I bought this car in part because of the safety feature, as it states on the new car sticker.