2003 Chevrolet Silverado Code P1637

2003 CHEVROLET SILVERADO
150,000 MILES • V8 • 2WD • AUTOMATIC
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ERAWLS53
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  • 1 POST
Three weeks ago I had the transmission replaced on my vehicle. Now I am getting a roaring noise and the light comes on saying battery is not charging with a code of P1637
Jun 24, 2014 at 10:51 AM
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RIVERMIKERAT
  • ✓ASE Certified Mechanic
  • 6,110 POSTS
  • ASE Certified Mechanic
Sounds like a bad alternator. With the engine running, put a voltmeter across the battery. You should see in the area of 13.8 V.
Jun 24, 2014 at 4:22 PM
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