As the title says my 2005 CTS has had this problem for some time now that it doesn't even try to start if i don't have the battery charger connected overnight after it starts up just fine, well sounds like a bad battery right? But even new battery didn't solve the problem and i ran a battery test which indicated that the battery was good.
Well then the weird part is that after an about 3 hour drive during which the car worked fine, i shut it off, and tried to start it and, nothing.
So what would be the problem? I've been worried about the ECM going bad and since i live in Finland, a new ECM from US is gonna take forever and the nearest Cadillac (or GM in general) dealer is in Germany so that's a no