Does a 2011 GMC Sierra 5.3 vortex engine have a EGR n where is it located

Hello, Dave here, contributing to RepairPal and providing expert advice since 2010. I am not seeing an EGR valve listed for this engine in this vehicle. I do not know, also, why you would wish to replace a component like this on any vehicle without having performed troubleshooting on a problem and having arrived at the part as failed. There is no benefit to "proactively" replacing an EGR valve on any vehicle. No need to borrow troubles! Things will reach that point in time if a symptom occurs and testing reaches the need to. Why are you thinking to replace this component?