I followed the directions to the T and watched videos of others doing it including dorman. 2 days later I got the nerve to try it. I am very mechanical as I am a maintenance man, so fingers crossed. 2 Minutes later I was done. Seemed good until the next day when remote start didn't work. I was worried. I called Dorman 1 800 number and the guy on the phone "no problem unhook your battery for 15 minutes and then hook it up and it will work" So I did that and now it works perfectly on the factory remote and 2 aftermarket ones. so before you reprogram try that. I was questioning my purchase but now I feel it was totally worth it. Real money saver after all. plus buy your remotes online for cheaper too.