I would start by finding out why the lights are on and fix/clear those first. You never know how systems are linked to eachother. Do you have a code reader?
Were the LIM gaskets leaking into the engine block or intake system before the gasket change? I could see that if some coolant was being burned before the repair that possible oxygen sensor damage cause the stall condition. Also, did you use RTV on the install, and if so was it "SENSOR SAFE" silicon.