2008 Pontiac G5 • 2WD Automatic • 55,000 miles

I have a 2008 Pontiac g5 and yesterday I was driving on the highway and I was passing a semi-truck, and I tapped my break to un-do my cruise control and my car completely shut off, except the lights and everything were still on. It really scared me and I don't know what happened. Do you know?
January 23, 2011.

Check out the related content below while we wait for the question to be answered by a professional mechanic.