Question about Cadillac Cars & Trucks
What year is your caddy ? Given the amount of electronics on these vehicles it could be a lot of thing's ! Are there any lights lit on the instrument cluster ? check engine , security etc.. The charging system on your caddy is computer controlled an if it is showing a service battery charging system warning message there are DTC'S stored . This is one your going to need to take to a dealer , do you have Tech 2 scan tool to hook-up to the vehicle ! It could have an ignition switch problem , power mode miss match ! All the modules on this vehicle communicate on a data bus, serial data communication . class 2 ,C.A.N -controller area network ! When you turn that key to start the vehicle ,the ignition switch sends a discrete voltage input to the BCM -body control module ,which in turn energizes relays that powers up systems on the vehicle ! So do yourself a favor before you make it worst !
Posted on Apr 09, 2015
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Posted on Jan 02, 2017
A battery can read 12 volts yet be weak in cold cranking amps, try a jumpstart and if that works have your battery load tested. Im betting your gonna find the battery fails the load test, meaning it needs to be replaced..
Posted on Jan 24, 2010
SOURCE: Changed a bad alternator, new
check your battery make sure it is able to take a charge. ,if the amps are good check your connection, from altenantor to battery. check voltage drops, battery drains. Your problem most likley seems to be
your battery. Your starter might also be draining your battery. You ll find the problem keep looking.
Posted on Apr 25, 2010
New battery needed or a trickle charger when vehicle not being used
Posted on Jan 03, 2011
Testimonial: "Pushed it out our narrow drive and jump started it. Off to get battery tested/buy a new one. Thanks for the quick response."
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