hey guys im having one heck of a time with my 99 7.3 im getting a p1395 p1396 codes for glow plugs out left and right bank my truck is a mutt its got all the late 99 stuck like injectors turbo IDM yada yada but still has the GPR with the shunt. so far ive replaced all the glow plugs wit diesel RX plugs new GPR and still get these codes they will not go away. next thing to try is UVCH both sides and a new shunt i suppose. i have the AE ford scan tool but just says 1 or more glow plugs are out. i tested each plug before it went in so i know they all work.