I have a 2011 2500HD 6.0 with 72,000 miles that has been giving me some trouble. It was throwing a P0132 (high voltage) and P0134 (no activity) code for o2 bank 1 sensor 1. Also has a random misfire and cyl 1 misfire. Swapped coils and miss stayed on cyl 1. I replaced the plugs and wires and driver side o2 sensor 1. Prob did not go away. Now it is throwing P0137 on bank 1 sensor 2 (low voltage). Truck runs rough at start up idle then smoothes out once warm. Truck runs rough again if I clear the codes. I did recently clean the injectors abt 2 months ago.
Help?!?!