Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
I am sorry that you have not been helped yet. I just came online and saw your question
First, it will help to know the year and model of your Cadillac.
Second, you say it doesnt start, but then say once it has ran for a few hours it will start the rest of the day with no problems. So, how are you able to finally get it started first time -jumping the battery, repeatedly hitting the start button, wiggling shifter back and forth, some other way.
Please remember that I am not there and therefore rely on you for as much information as possible. thanks
Ok, do you have a voltmeter for testing?
When did they test the battery - as soon as you drove up and the engine was already warmed up, or after it sat overnight and cold overnight?
I ask because you cant test for a cold start issue when the engine and components are warmed up, kinda defeats the purpose of testing for cold start issue
I suspect that the battery is weakened enough to cause the cold starting issues, which is the only part of the electrical starting system that is affected by weather. Testing it after it was just driven will show it good because it was charged by the alternator and the voltage raised.
The battery being the culprit would need to be confirmed by letting it sit overnight when cold and then test the voltage and amperage first thing in the morning before cranking. I suspect that it will be found that the voltage and amperaged have dropped due to the cold weather and sitting overnight. You would need to leave it in a shop overnight for this.
If you just want to replaced the battery based upon my prior experience and your symptoms, I would advise to go ahead and do that
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