Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hello and welcome!My name isCustomerand I can assist you with your question.
If the battery and starter are in fact good, then I would suspect a bad alternator or a charging system problem. Your best bet would be to get the engine starter (using a jump if needed) and then checking the alternator output. It should be approximately 14.0 volts with the engine running. The battery fully charged should be 12.6 volts and the cables and connection should be clean and tight of course. If the engine does not start with a jump, you can check voltage on the main fuses under the hood to ensure you have a bad connection from the battery. However, based on what your telling me, it sure sounds like the alternator is at fault. Good luck and let me know if you have any further questions!
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