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GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15201
Experience:  GM Grand Master Technician 2007. 14 years experience.
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Chevrolet ssilverado 1500: instrument panel flashing when truck

Customer Question

instrument panel flashing when truck running. I used a voltmeter to check battery. Had 12.8 v. Then started truck to test charging system meter kept flutuating
Submitted: 2 years ago.
Category: Chevy
Expert:  Virtual Wrench replied 2 years ago.
With the meter set on DC volts and connected to the battery cables can you tell me the readings it is fluctuating......lowest to highest please. Also try checking at a high idle speed and see if the fluctuation stops and maintains a steady reading and tell me what it is.
Let me know