Question about 2000 Chevrolet 3500

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Alternator not charging

2000 chevy van 1 ton. good alt. good batt. small intice wire is not getting power. Changed fuse linkages. good connections. Help!

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  • regnsus Dec 14, 2008

    been checking with test light.

  • mikehumble May 11, 2010

    Are you checking for power with a test light or volt meter?

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Check for voltage with a multi meter or volt guage most of the GM trigger wires come from the computer and are only 5 volts. 5 volts is not enough to light some test lights. If still nothing the problem is probably the computer. But it can be manually excited. The two terminals in the alternator on the left of the pigtail (when looking from the front of the van) need + power. the far left is the trigger wire the one next to it is ignition power.

Posted on Dec 15, 2008

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