My 2004 CTS started doing the same thing last week (October 24) Took it to the dealer the PCM was shot. It was covered under the factory warranty (130 000km if I remember right) works great now.
I had the same problem with my 07 CTS not starting and the continuous effort of starting fixed the problem. it took 8 seconds o turn over
I have a 2007 CTS that didn't start, it sounded like it was out of gas, starter was doing it's job but I got nothing at all.
Talking to a Cadillac Tech he said that it's a misfire in the engine, it's programed to fire when the key is turned, but sometimes the engine is in the half start mode, inbetween the fine line of starting and not, just turn the key and hold it without giving it gas, the car will start after 15 sec or so and then the car will add gas as needed, you might see white smoke come out but that's just any extra gas that's being burned. I tried this and sure enough after 15 sec's of holding the key down it started. good luck...
The car is a lemon!
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At times car will turn over but not start. After a wait of 5 to 45 minutes it fires back up. Turns over fine. At has 106000 miles. No check engine light. No other indications. Once running it's just fine.
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