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So you have a new alternator. I S IT CHARGING ? If the answer is yes , and the battery still dies, I would say there is a 12 volt drain in the electrical system. Hope this helps
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Question edited for clarity and remove non-existent word 'dint'.
Question moved to model category.
Intermittent faults are the hardest to diagnose. The only way is to find an auto electrician and his pro grade scan tool computer can record what is happening and what causes it? The first thing I would do is check all the grounds.
It could be a bad alternator not keeping the battery charged. You need to check the starting and charging systems with diagnostic meters to find the problem.
If the a/c does not engage as a result of the electronic control system in your 1996 Cadillac, the climate control system may need to be replaced.
However, if the problem is being caused by low charge of R134a in the system, have the system charged before changing that electronic part.
I have never seen a Cadillac Climate Control System do this, which leads me to believe that it may be more electronic than refrigerant pressure related.
If the refrigerant pressure was low in the system, the climate control system should still stay on 'auto' mode, I think, and simply blow warm air.
A 12V battery drain, doesn't necessarily mean a bulb is on. There could be 17,842 other reasons such as a sticking seat switch, blower motor staying on, I could go on. Need to have it tested for that,and identify the circuit with the drain on it. Then beginto search and see what is the cause. Hope this helps
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