Aug 25, 2008 #1 C chevyman Registered User Joined Aug 25, 2008 Posts 1 Reaction score 0 Location Phoenix, Arizona I have a 2003 Duramax Diesel. Getting a DTC code PO404. Where is the EGR valve located on the motor? Also getting DTC PO700. Where is the TCM located?
I have a 2003 Duramax Diesel. Getting a DTC code PO404. Where is the EGR valve located on the motor? Also getting DTC PO700. Where is the TCM located?
