Rick's Free Auto Repair Advice

Posts Tagged: volt meter

Voltmeter fluctuates GM Trucks

The voltmeter fluctuates on my GM Truck GM has issued a technical service bulletin #07-06-03-009 regarding Voltmeter fluctuates GM Trucks. GM says fluctuating voltage on the vehicle’s voltmeter is NORMAL and is not a reason to replace any parts. The TSB applies to 2005-08 Cadillac Escalade, 2005-08 avlanche, Silverado, Silverado Classic, Suburban, Tahoe, 2005-08 GMC Sierra, Sierra Classic, and Yukon. The charging systems in these vehicles do not use an alternator decoupler to increase gas mileage. Instead they incorporate a Regulated Voltage Control (RVC) system. The RVC is controlled by … Read More


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