Open the hood and jiggle the battery cables. And smack the alternator a few times.
I have seen alot of times the cable connection sometimes loosens up, or may not have been tight enough when changed.
Another problem is the battery connection. GM uses a little bolt to hold the cable on. Sometimes it strips, or is dirty
And sometimes the brushes in the alternator get dust in them. They are spring loaded, and sometimes need a little persuasion.
Let me know if it helps.
Roberta
I have seen alot of times the cable connection sometimes loosens up, or may not have been tight enough when changed.
Another problem is the battery connection. GM uses a little bolt to hold the cable on. Sometimes it strips, or is dirty
And sometimes the brushes in the alternator get dust in them. They are spring loaded, and sometimes need a little persuasion.
Let me know if it helps.
Roberta
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