came on yesterday and the truck is out of warranty. Dropped it off at a mechanic I trust. He just called and told me the truck showed a PO 404 - EGR Position Sensor Performance.

I picked the truck up without doing the repair.

Where is the EGR Valve located on a 2007 Ram Hemi and how hard is it to change? instructions or pics to walk me through it?

 

There's a recent write-up on replacing your EGR. Only about $40-50 bucks to replace. Has pics and everything. Just check further down.