Battery light problem

Asked by Jan 25, 2016 at 06:37 PM about the 1999 GMC Sierra 1500 SL Standard Cab LB

Question type: Maintenance & Repair

I have 99 GMC Sierra 4.8  I can drive and my
battery light comes on I lose no power my gauges
drop but everything still works Any Idea I was
thinking of changing the switch ?

2 Answers

69,595

Is your battery good? I would have it tested. Clean the battery terminals and cable ends while you are at it.

4,955

Sounds like an alternator problem. The light comes on when the system is discharging rather than charging.

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