Just received 2 of these to replace a broken key fob. They are for my 2003 Monte Carlo which still has the factory radio. I went to the product website and got clear instructions on what to do. I went to my car and was able to successfully program both fobs in less than a minute. As shown in the image below, I compared the factory key fob to the KeylessOption key fob. The factory remote seems better inside than a new one, or maybe a new one is just easier to build; Either way, it works as well or even better than the factory keychain. It's pretty good for the price. They also come with fully charged batteries pre-installed.
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