I've been having trouble programming my key to my new ecm and everything I've read says the security light is spouse to stay on and it never does I've gone threw the gm pass code programing process 3 times I'll put the key in to turn it on but not the engine and the security light flashes for a second but then turns off I'm not really 100%sure why but any advice would be helpful on how to program my keys because it won't even start without them progmed

 

Hi!

Welcome to CobaltSS!

It will be helpful if you include your year and model SS. Then we can move your question to the best forum for help from fellow owners.

Bob