1997 Chevy Tahoe battery light in dash.......

1997 CHEVROLET TAHOE
190,800 MILES • V8 • 4WD • AUTOMATIC
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BUGNHARD
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my battery light in the dash is lit. i noticed that when i hit the brakes while driving, the voltage goes down on the battery gauge. then after i let go of the brakes,the voltage goes back to normal.same with the headlights. is that an alternator problem? also before this problem began, the truck was screaming like a banshee and would stop after about ten minutes of driving unless it's a cold or wet day (it would scream longer). once the battery light came on, the screaming stopped. what gives?
Feb 23, 2010 at 1:31 AM
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MHPAUTOS
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Hi there.

The noise will be the alternator belt slipping, as it heats up it will start to soften and grip, check the belt tension & condition and get the alt charge rate checked, start here.

mark (mhpautos)
Feb 23, 2010 at 2:07 AM