Pontiac Customer Service Issues

I have been experiencing a recurrent issue with my [redacted] Pontiac Grand Prix, which makes me feel very unsafe while driving. Despite replacing the ignition switch, getting a new battery, and cleaning connections, the car intermittently fails to start, with the entire dashboard lighting up but no other response. This is quite inconvenient and unpredictable, as it might work fine for days and then leave me stranded when I am out. I suspect there might be an underlying cause related to the security system. I have already spent a significant amount of money on repairs, yet the problem remains unresolved. Any assistance would be greatly appreciated. Thank you.

Hello! I want to express my gratitude in advance for considering helping my mother, Estelle L. She is a 99-year-old U.S. Navy W.A.V.E.S veteran from World War II. She lost both sets of keys for her [redacted] Pontiac G6, Vin #1G2ZG58N[redacted]50, in the last month and urgently needs assistance getting a replacement set. A bit about Estelle: Daughter of Lieutenant Frank B., a legendary Chicago Fire Department member. Survived the Great Depression in the 1930s. Recruited into the Navy by Genevieve S., sister of the 5 Sullivan Brothers. Met her late husband, Lavern P., during her service at Naval Station Great Lakes, Illinois. Estelle lives in Dow City, Iowa, and you can send the keys to her P.O. Box or home address. Your help would mean a lot to us. We look forward to your swift response. Best wishes and Happy Holidays, Vincent J. L. (Estelle's son) Cell: [redacted] PS: Let's all work together to support our U.S. Navy W.A.V.E.S WWII Veterans!