18-066-15

Flash: Diagnostic And System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with updated software. The technician may find the following Diagnostic Trouble Code (DTCs) set in the Powertrain Control Module (PCM) memory: ? U0140 - Lost Communication With Body Control Module. (3.6L engine only). NOTE: Attempting to clear this DTC will be unsuccessful. Some customers may experience any of the following: ? Continuous cycling of fuel pump relay when using remote start (3.6L engines) ? Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the Technician may find that P0108 - Manifold Absolute Pressure Sensor Circuit High has been set active or stored (3.6L engine) NOTE: MIL Illumination for P0108 - Manifold Absolute Pressure Sensor Circuit High affects only 2012 model year vehicles equipped with a 3.6L engine (sales code ERB). ? 1 - 2 upshift clunk or bump (2.4L & 3.6L engines) ? 3 - 4 harsh upshift at closed throttle after a WOT stab in 1st or 2nd gear (2.4L & 3.6L engines) ? 4 - 5 upshift clunk or bump (2.4L & 3.6L engines) ? 5 - 6 upshift clunk or bump (3.6L engine) ? 6 - 5 downshift clunk or bump (3.6L engine) ? 6 - 4 downshift clunk or bump (3.6L engine) ? RPM Fluctuating or Jerking feeling while operating in cruise control. Condition is more noticeable when the vehicle is going up and down grades(2.4L & 3.6L engines) ? 1 - 2 harsh upshift going down a grade (2.4L engine) ? 3 - 2 downshift clunk or bump (2.4L engine) ? 4 - 3 downshift clunk or bump (2.4L engine) ? Improves the consistency of how shifts are controlled during upshifts ?torque management? ? Delayed downshifts (3.6L engine) Updating the software will correct the conditions listed above.