Can a bad alternator leave a GMC Sierra without power?
Can a bad alternator leave a GMC Sierra without power? A bad alternator can leave your GMC Sierra without power and unable to move. Alternators don’t always go bad in the exact same way. We’ll cover the symptoms of when an alternator goes bad, and how to diagnose a bad one (which is really pretty easy). Can a bad battery cause an alternator to over charge? Make sure that all the connections to the alternator, remote voltage regulator (if applicable) and battery are clean, tight and in good condition. Check your battery or have it tested at your local auto...