Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Sometimes these side-post batteries will look like everything is OK when in effect there is no connection between the cable and the battery lead cavity. First thing you should do is oprn a door, then grab each cable at the battery and turn it clockwise, as if to tighten it. If doing that makes the courtesy lamps blink or come on, then all you need to do is remove, clean and reinstall the battery cables.
Please let me know if that works.
Good job! I'm glad I was able to help you solve this issue.