Alternator

Asked by Jeffrey Apr 10, 2019 at 11:29 PM about the 2007 Pontiac G6 Base

Question type: Maintenance & Repair

How to test the alternator without taking it
off

3 Answers

F_O_R answered 5 years ago

With the engine running use a volt meter on the battery terminals. If the alternator is good you should see 13.5 to 14.5 volts. If you see 12.5 or less the alternator is not working.

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