Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hi there, I am cam. My first suspicion is a bad battery, not bad as in dead but bad as in shorted internally. This will result in what you gave as your issue.
What we need to do first is remove both batteries and have them tested. Most parts stores will test for free. This must be the first step because ANY future testing will be flawed without having rock solid batteries. Even if they look new, still test them.
Tested how? Sorry to ask but many come back saying they are good but tested at home or with a charger only.
Ok Do you have a test light? If so then it is best to test at the small stud at the starter when the key is in the start position. If there is no power there, then we need to start checking other places such as the starter relay, or the neutral safety switch. If there is power at that stud then you likely need a new starter if the battery and cables to the starter from the battery are good.