2000 Chevy Silverado Alternator works above 40 degrees F

2000 CHEVROLET SILVERADO
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2000SILVERADO
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Electrical problem
2000 Chevy Silverado K2500, 6 liter, 4 Wheel Drive Automatic 111000 miles

Second winter, same problem. Below 40 F, alternator start is delayed. With cold start @ 35 F, alternator charges after about 1 minute. Cold start below 30 degrees F, no charge till engine warm, system voltage is < 11 until engine temp > 160 F. Warm starts in cold weather get charging >14 volts in < 5 seconds. Alternator has been replaced since problem started. No problem in warm Texas weather.
Jan 11, 2010 at 8:32 AM
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BMRFIXIT
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Check for corroded wires
check battery terminals
run extra ground wire to engine or alternator bracket
Jan 11, 2010 at 6:46 PM