[legodude]

I'm having the same problem. Every morning I drive across an airport tunnel and my 99 Alero V6 automatic always seems to stall or feels like it's about to stall when I reach the last 1/4 of the tunnel. When it does this all the lights on the dash light up like a christmas tree, the door chime goes off, and they all turn off and I only see the security light solid for a moment and then it starts blinking. Then everything either goes back to normal or it stalls. I don't have to do the whole 10 minute procedure thing even if the security light is blinking because after it stalls, I can start it up by turning the car off and starting it again right away and get where I need to go. Funny thing is I pass the same tunnel again going home and it never happens. And it never happens anywhere else I go. Only in the morning and only in the last 1/4 of the tunnel. Pretty strange. I need to fix this because I could seriously get rear ended in the tunnel. I got it scanned for free at Autozone and it showed no codes. My guess is that some signal in the tunnel or when the light sensor turns the headlights on, it is causing the electronics to screw up. Any ideas on how to fix this?