Grinding or screeching noise at stop in reverse

1999 CHEVROLET LUMINA
164,534 MILES • 3.1L • V6 • 2WD • AUTOMATIC
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MELCRY1107
  • MEMBER
  • 1 POST
It makes a grinding noise when in reverse as you are stopping and the lights dim for a second, also did it once in drive (sounds like when the starter hits the flywheel noise).
Any help ?
Apr 26, 2019 at 11:48 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Welcome to 2CarPros.

If the lights are dimming, it sounds like the alternator belt is loose and squealing allowing the alternator to slow enough to dim the lights.

Check the condition of the serpentine belt. Make sure it is tight.

Take a look through these links and let me know what you find.

https://www.2carpros.com/articles/car-squeaking-noise

https://www.2carpros.com/articles/how-a-serpentine-belt-tensioner-works

https://www.2carpros.com/articles/how-a-serpentine-belt-works

Let me know what you find.

Joe
Apr 26, 2019 at 1:32 PM
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