Battery light

[MikeMcW]

When I drive my car some times my battery light will come on. But when I slow down it will go out. and My battery is not dead when I start it so what it going on? Any info will help thanks.

[RocketFast321]

copyright rixGAphx (rick)
A. Check The Battery And All Its Connections!
1. The GA's electrical system is VERY susceptible to minor variations of voltage and load/amperage. This includes the ABS system (if so equipped) which has its own module.
2. Disconnect the negative terminal first, then the positive (this avoids accidental sparking if the wrench slips and hits a metal body/engine part while turning the positive screw).
3. Clean all terminals to shiny metal; remove deposits with a water/baking soda solution, and sand/scrape/polish the metal with sandpaper and knife.
4. The molded red rubber boot on the positive battery terminal allows massive corrosion to develop unseen within the boot.
[This happened to me, and it FRIED the alternator (the alternator 'sensed' a dead battery and tried to put out maximum amperage for recharge, but the power couldn't get thru the corroded connection).]
IMO, cut off this crappy GM rubber boot, and replace with an aftermarket protective cover that can be inspected.
5. Reconnect the battery, first positive and then negative.

B. When connections are VERY bad, any idiot lights can come on and systems can fail for no legitimate reason.

C. I firmly believe that at least 70% of all GA electrical-related problems (and 40% of seemingly non-electrical problems) will be solved by proper and MONTHLY attention to the battery as stated above.
copyright rixGAphx (rick)