2011 Buick Enclave Battery Location. Although some batteries last much longer, most batteries begin breaking down chemically after four years, so you could experience dimmer headlights and other negative effects before you have a dead battery in your enclave. Under foor at the rear of the front passenger seat

Check if this fits your 2011 buick enclave. Replacing the battery in a buick enclave and yes the battery is behind the passenger seat 2011 buick enclave cxl catalytic converter turns red hot after barely 2 minutes what is the cause 2 answers already replaced all three section of catalytic converter and starter;