Cadillac escalade ext will not start dic message says service battery charging system i'm reading 12 volts on battery but it act like a dead battery not charging system

vehicle wont start with a dead battery

a battery has 12 volts of charge, when you drive it the alternator charges it to 14 volts, I don't think that you have a problem with your charging system however the DIC may need some help

Check battery connections and have battery and charging system tested.

Usually this message comes on when the vehicles electrival system is below approximately 10 volts or over 16 volts indicating a charging system malfunction. You should take the vehicle to a trusted automotive repair facility and have the alternator and battery check for proper performance.

This sounds to me like the antitheft security system. If the computer doesn't read the transponder frequency coming from the key, it goes into anti theft and shuts down the starter and/or the injectors. If it starts for 1 to 5 seconds and then shuts down, its probably this. Read up about this on this link, it gives you symptoms and causes, plus a "do it yourself" solution if you decide that this is the problem. I've been dealing in GM vats-passlock-passkey securities for quite a while now. From your description, I'd guess this is the issue. http://vatspasslockpasskeysecurityhelp.yolasite.com/

bad battery connection tighten the wires and try again

Whats dose it mean went I have my service stability system light on and it dosent trun off .. I have a Cadillac escalade truck 02 All wheel drive hope some one could help me.......

ARE YOU SURE THAT THE SWITCH IS O.K AND MOTOR IS NOT STUCK OR JAMMED ... HOW MANY AMPS MOTOR SINKS FROM THE BATTERY ... IF DEAD THEN YOU READ 0 AMPS.

Make sure the car is not draining the battery while parked and shut off.
Place a meter across the battery, it should read 12 volts when charged up.
Start the car and it should climb to and read 14 to 14.5 volts. If it doesn't, then the alternator is bad.

here ya go check for power to the alternator good luck ............ justuscc Charging & Starting System Wiring Circuit - VIN K