2004 Chevy Impala - no response after key security delay

Electrical problem
2004 Chevy Impala We have plenty of battery power on our Impala. The key start has two audible delay signals. After receiveing the signals, the engine has No response, just a disappointing spongy feel of turning the key. I was able to get it started after ten to twenty attempts, the car would run fine once cranked and would even restart immediately if warmed up. Now I'm getting nothing.

I suspect something electrical as an aside I noticed minor glitches when turning and using the signals