My 2007 Denali 6.2 runs great! But, at some point during any 10 miles or so, the battery light comes on, and the volt reading appears to drop to about 13. Light is on for a few seconds, less than a minute, then goes off.
It does this with full a/c on or off, lights on or off, etc.
About 8 months ago, the alternator started giving constant low readings, and the battery died. I put in a new battery and new alternator, and have had no problems until now, with the warning light.
Vehicle has no hesitant starting or acceleration, no dimming of lights, nothing to indicate a weak battery or alternator. Just the little warning light. Alternator was checked yesterday, gave 14.3 to 14.5 at warm idle.
Is this just a gauge problem?
It does this with full a/c on or off, lights on or off, etc.
About 8 months ago, the alternator started giving constant low readings, and the battery died. I put in a new battery and new alternator, and have had no problems until now, with the warning light.
Vehicle has no hesitant starting or acceleration, no dimming of lights, nothing to indicate a weak battery or alternator. Just the little warning light. Alternator was checked yesterday, gave 14.3 to 14.5 at warm idle.
Is this just a gauge problem?
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