1999 Chevy Blazer Pulsating lights

1999 CHEVROLET BLAZER
189,000 MILES • 6 CYL • 4WD • AUTOMATIC
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KIPPP
  • MEMBER
  • 1 POST
Head lights and dash board lights will pulsate sometimes its more intense than other times. When the lights are pulsating you can see the needle move on the volt gage on the dash.Then sometimes when driving the lights stop pulsating for a while then start back up.
Dec 3, 2009 at 5:22 AM
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SWILLIAMS
  • ✓Experienced Mechanic
  • 597 POSTS
First check the connections on the battery, then the ones on the alternator. Clean them all real well, also clean the other end. If it still does it then I suspect the alternator is failing.
Dec 4, 2009 at 1:47 PM
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