Q: Battery light

asked by on

Battery light came on. Car also shut off. But started right back up. Car battery had dead cell in it. Replaced battery. Had alternator checked, it's good. But battery light still comes on and still shuts off. What other thing can I do to fix the problem? My car has an automatic transmission.

Hello, thank you for writing in. The charging system is controlled by the PCM (powertrain control module). The module receives input information to keep the electrical system operating, if the voltage goes below 9.0 volts the light will come on and causes the module not to operate producing a stall condition. To test this, you have to have the issue happening at the time. There is test equipment that has to be used-- you can find information about that and servicing it in our article here. If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect this light for you, and make or suggest any repairs as needed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Battery light

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Battery light comes on and off replaced battery and altenator tested good at AutoZone?

If the battery is new and good, and the alternator is good and charging, the problem may actually be in the ignition switch. If you have another key, try using that one. Also, check your VIN number on safercar.gov to...

Q: Clutch pedal gets stuck

There may be a problem with the clutch pressure plate, the hydraulic clutch master, or slave cylinder binding. The clutch is the most likely problem, and would need to be inspected to be sure. I recommend that you have a...

Q: Won't start

I would agree. The ignition switch is sounding like the main suspect on your Suburban. That's the only thing that could lock your steering and then cause instrument cluster to not turn on. If you want to have this checked,...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.