Mechanics

CHEVROLET BLAZER ALTERNATOR PROBLEM

1997 Chevrolet Blazer • 197,000 miles

The volt gauge normally reads 15 volts. When I run the lights & heater fan, its drops to 9 volts. I hear a whistling noise that appears to be coming from the alternator. It returns to 15 volts when I shut them off. Also, the battery seems to be slowly discharging. Could this be a problem with the alternator?
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Guest
December 2, 2012.



Yes, the alternator has failed.

Roy