2003 Chevy Silverado

Tiny
JLR10865
  • MEMBER
  • 2003 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 180,000 MILES
I have a 2003 chevy 4x4 with 5.3 engine & auomatic trans. I just replaced the alternator (Autozone machine indicated it was bad) and the battery still wouldn't hold an adequate charge so I also replace the battery. Now all my lights are having a slight stobing effect while the egnine is running. Is it possible that I still have an alternator problem?

GOT IT!
Just as I thought, the new alternator was malfunctioning. Producing 15.9 volts thus causing a surge to all the electronics and making the lights pulse/brighten and dim.
Monday, October 27th, 2008 AT 9:26 AM

2 Replies

Tiny
DENNYP
  • MECHANIC
  • 1,823 POSTS
Check the battery cables for any corrosion.
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Monday, October 27th, 2008 AT 10:49 AM
Tiny
JLR10865
  • MEMBER
  • 1 POST
Thanks. I did at the battery, but not at the point of attachment at the engine ground or to the fuse assembly at in the engine compartment.
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Monday, October 27th, 2008 AT 12:21 PM

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