2003 Chevrolet Silverado 1500 "test alternator" Questions

so not sure it that is the problem or if the voltage regulator is the problem. I had the alternator tested at auto zone and it tested fine so i am not sure what to do at this point. If anyone can help

trucks, fluctuating voltage is caused by a faulty alternator voltage regulator. Have the alternator tested, strong possiblityits defective!!Hopefully this helps!

...internally into the alternator. the voltage regulator is inside the alternator, if the alternator tests ok then check the large RED/BLACK wire that goes to the alternator for a constant 12 volts, ...

...ran low and you jump started with a low battery, putting a lot of stress on your alternator. I would pull the battery and load test it after fully charging it and also have the alternator

...test charging system (Alternator) Your alternator might not be charging properly and you've been running on battery power. You've probably run the battery down so low that there's not enough power to ...

...alternator can keep your truck running and that the it's doing its job. Then you can test your battery. Hope this little info helps. Thank you for writing to fix ya. Best Regards Richard May be a ...

...alternator isn't putting out power to charge ththe battery anymore. To do a quick test, start the car and while it's running, remove the negative battery cable. If the car dies, the alternator isn't ...

...it will go back to normal, i had my altenator tested and it was good but my battery test showed that it was overcharged. renew alternator ,the brushes/commutator are worn giving intermittant ...

...test. Unhooking the starter and alternator from the system you can take a test light and see that the positive battery cable for the truck is going to ground, which is why the batter is dead. The ...

start? Go to the parts store and have them hook up the battery and alternator to test the thing under load.  Shouldn't cost you anything for the test. Check the Mass flow Meter and the Map Sensor