If the battery light is displayed when the engine is running, you may have a problem with your charging system.
The battery display will stay on while the key is in RUN until the engine is started.
If the message stays on after the engine is started, it could indicate a problem with the generator drive belt, or some other charging system problem. Driving with this message could drain your battery.
If you have to drive a short distance, turn off all accessories such as heater, air, radio, etc. and get it checked right away.
Your 2004 Chevrolet trail blazer and battery light indicator is always on because the battery has sufficient charge.
See sources and related links below for 1999 Chevrolet Tahoe light bulb part number list.
A person can reset the service engine light in a 1998 Tahoe by disconnecting the battery cables for 1 minute. After the battery cables are reconnected, the light should turn itself off.
could be a bad alternator or battery
Its powerd by a Dc battery
alternator. go to a parts store and have them test the charging system. must will do that for free
Loose connection? Bad ground? Weak battery?
A flash light battery typicaly costs $3.99 plus tax. Thanks for reading my answer (:
A failing alternator.
on my old 1.2 clio the battery light came on as there was fault with the alternator and it needed replacing. As far as i know the battery light comes on when the battery is not charging or there is a fault with the battery.
Dead cell in the battery requiring a replacement battery or some light is on that is draining the battery. Can also be a stuck relay.
lack of charging system voltage.