If it doesn't turn over and acts like a dead battery, take both battery cables off and clean both ends. Make sure there is a good ground between the engine and the body. If it still does it, go to Auto Zone and have them check the alt and battery for free. How about a starter problem ??
If you have the wrong size battery in a Cadillac with the northstar will it effect the alternator voltage?
check the alternator fuse on the main cable that goes from the alternator to the battery. sometimes the alternator shorts out this fuse. it's usually mounted on the right side of the firewall in a plastic cover over .
Is it charging, if not have you checked wiring to alternator.
by changing the alternator
my battery is still on after changing battery and altnator
Possibly defective alternator.
Dead cell in battery, defective alternator, or something is on pulling power from the battery.
Battery light usually means alternator not charging. Most common solutions would be be a bad alternator, bad connection, or loose alternator belt. If the battery and alt test ok than check the connections to the alternator and battery.
Happened to my 97. The alternator went out. Had to replace it and get a new battery. No problems since.
Battery light usually means alternator not charging. Most common solutions would be be a bad alternator, bad connection, or loose alternator belt. If the battery and alt test ok than check the connections to the alternator and battery.
The battery is bad or the alternator is not putting out the correct voltage and is bad.
There are a few reasons why a battery may drain overnight on a 1987 Cadillac Fleetwood. One reason could be the alternator needs replaced.