Depending on if you have the "pats" system. The chip in the key, you may have to reset the system. Try and use all the ignition keys you have. When you try and start the vehicle, look to see if the security light flashes fast. If it does, then the security system does not read the code. Disconnect the negative terminal on the battery for about fifteen moinutes. place the igition key on and try and start again. If that doesn't work you may have to go to the local dealeer and have the keys reprogramed to the vehicle. Good Luck.
Alternator needs replacing.
Battery located under drivers seat. When replacing the battery in an MMI equipped. vehicle, resetting of the system may be required at a dealership. Battery is vented to outside of vehicle.
Disconnect battery for about 10 minutes or Have vehicle scanned to determine problem and clear code
When ever the service engine light is blinking you risk doing serious damage to the catalytic converter. I would recommend not using the vehicle until the problem is fixed. Replacing the cat can be very expensive. Have a trusted mechanic diagnose and correct the engine problem.
Something is on drawing power. Can be any light on the vehicle or a relay stuck.
There is a problem with the SRS in your vehicle. This is not a DIY repair. Take it to a professional ASAP.
Mind died on me and I replced the battery. Had to clean the inside and it worked fine.
Their is a backup battery system built into the On-Star module. It should never need replacing over the life of the vehicle.
You do not reset a battery light. The light is on because there is something wrong with the charging system on the vehicle. In most cases the alternator has failed and needs replacing. Once you fix the problem that caused the light to come on the light will go out.
That depends upon what the starter problem is. If the battery is exhausted, you can use another vehicle's battery, with jumper cables.
When replacing battery, when servicing some part of the engine, or when the vehicle is not going to be started for over one month.(keeps the radio memory from draining battery)
The vehicle should ave a voltage regulator. If the battery and alternator are good then the regulator is most likely bad.