It sounds like you either you have bad alternator or a parasitic battery drain. I’ve had this with my BMW. Some circuit is open that’s causing an electric power drain. First, test your alternator. If it’s good, you have to take a voltmeter and look for a draw on each fuse.
2005 CTS no crank no start
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
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
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