You could have a bad fuse, or a bad fusible link. However, you could have fried the computer or the voltage regulator, or any number of other things by trying that. When dealing with a vehicle younger than an 80 model, you should never remove a battery cable while the engine is running. When you remove a battery cable while the engine is running, the alternator starts charging wide open. The voltage on the electrical system can get up as high as 40 VDC! That's a little too much for the electronics in today's cars.
You might have a bad battery, a poor connection between the battery and alternator, or a bad ground from the battery.
Alternator is not charging. Have it tested and/or replaced.
Alternator may be defective, or connections at battery may be corroded or loose. The battery itself may also be defective.
check fan belt is not broken or loose and check alternator
Your battery has low voltage and needs recharged, check for loose battery cables, if the light stays on have your alternator checked.
Usually, either a bad (temperature sensitive due to bad diodes) alternator or corrosion where the positive cable attaches to the battery. Failing that, it means something else. Get it checked or you're going to have a problem.
When this light stays on, it is telling you the system is not charging. Possible bad alternator, battery, or loose or disconnected wire.
check your alternator you may need to replace it and battery too, sorry
allenglen r. cabornay
first remove the cables from battery, neg, than positive, remove hold down bolt on bottom of battery. remove battery.
Remove the belt from your 1999 Chevy Malibu alternator. Remove the wiring harness from the back of the alternator. Remove the alternator retaining bolts. Reverse the process to install the new alternator.
Check the output at the battery posts. With a multimeter it should be putting out between 13.5-15 volts.