intermittent no crank

This is a 1999 Century, and the issue started about 2 weeks ago. Sometimes I go to start the car and I get no crank, no clicking or anything. I haven't found any specific thing that works but so far I've always been able to get it to start after waiting a little bit (5-15 minutes). When this...

2000 Le Sabre would start only when it felt like it. When the radio wouldn't come on I knew I had a no start. Other things that wouldn't work on the no start were: remote, door locks, windows, fuel gauge. Other stuff would work-like the power seat & blower motor. I checked all the fuses on...

Well, it didn't take long for me to check this board and see how many of these intermittent will not crank and stalls while driving threads are found here. Only problem is, I never see a resolution. Wife's car. 2008 Buick Lucerne CXL Leather 3.8L V6, loaded. Original owner, 63,000 miles...