Having problems with your Chevrolet Silverado 2500 ?

84 CK TRK, 2500, 5.7L 55,000 miles have replaced alternator twice - battery still reads 12 volts. Trickle charge on battery OK and engine starts up OK - terminal 1 on alternator wire (brown) reads 2.4volts and wire is good to firewall - I replaced the ignition switch same condition occurs - 2.4 volts at terminal 1 (brown) wire. If I jumper 12volts to the Terminal 1 wire - the alternator puts out 14.4 volts. Take the 12 volts away from terminal 1 battery reads 12.5 volts and starts dropping prett

Posted / edited by AnonymousUser on : 09-12-2019

Answers :

On some of the older style GM's you can take that brown wire and cut it and take the end leading from the alternator and hook it directly to the hot terminal on the alternator and just leave it hooked up and it will work. But I have ran into the occasional problem where leaving it hooked up will drain the battery when the vehicle isn't running. Hope this helps..
Repair Help & Product Troubleshooting for Chevrolet Silverado 2500

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