Reduced power

Reduced power

I was otw to work and had just left the driveway when the check engine light came on and the dash read reduced power. I wad trying to give it gas and it was barely moving. I turned around and grabbed my wife's jeep and went to work. so I didnt have time to scan it. Last time this happened I scanned it and no codes popped up. I disconnected the battery and after about 20 minutes it ran fine and no check engine light. has this happened to anyone else and if so what did you do to fix it? 2003 chevy tahoe ltd 5.3 engine