Hello, white smoke is evidence of condensation or internal engine coolant leakage. It wouldn't be common for your Tahoe to have an internal engine coolant concern.
So, I'm wondering about the "white" smoke really and hope someone local to you can see your vehicle and evaluate it.
Use this link to find some shops near you that can help with your concern:
www.repairpal.com/repair-shops
RepairPal Certified shops can diagnose and repair your 2007 Chevrolet Tahoe. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
