18-077-25

Flash: Powertrain Control Module (PCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs):**
• **U0104-00 - Lost Communication With Cruise Control Module. (NA Market Only)
• U0405-00 - Invalid Data Received From Cruise Control Module. (NA Market Only)**
• P018B - Fuel Pressure Sensor "B" Circuit Range/Performance.
• P00C6 - Fuel Rail Pressure Too Low - Engine Cranking Bank 1.
• P06DD - Engine Oil Pressure Control Circuit Performance/Stuck Off.
• P0461 - Fuel Level Sensor "A" Circuit Range/Performance.
• P2C90-00 - Crankcase Ventilation System - Hose "A" Disconnected.
• P0604-00 - Internal Control Module Random Access Memory Ram Error.
• P060C-00 - Internal Control Module Main Processor Performance. Customer may also experience one or more of the following:
• Undesirable vehicle drivability behavior causing a Shift to Park event during Engine Stop Start (ESS) while Adaptive Cruise Control (ACC) is active.
• Pressing the ACC button while ESS is active can shift the vehicle to park.
• Idle speed oscillations observed when in "Snow" and "Mud" modes.
• Poor engine performance (undershoots engine speed) for ESS and for non-ESS engine start.
• Screen two incorrectly pops up on the Instrument Cluster Panel (IPC) for five seconds during "Terrain" and "Rock" mode.
• Poor or reduced Air Conditioning (A/C) performance during wide open throttle or heavy acceleration. **In addition, the following software enhancement is available:
• Software update to prevent false DTC detection of U0104-00, U0405-00 and P018B. (NA Market Only)* This bulletin involves reprogramming the PCM with the latest available software.