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Service bulletins for the 2014 Jeep Grand Cherokee

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

634 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
S2025000001 Rev.2020-12-21. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). (Rev. B) Malfunction Indicator Lamp Illumination (MIL). Diagnostic Trouble Code (DTC) P203E ? Reductant Level Sensor 1 Circuit Intermittent-Erratic Set.
08-092-202020-11-30. Service bulletin. STEERING; EQUIPMENT; POWER TRAIN. Improper Up Shift With Paddle Shift This bulletin involves replacing both steering wheel paddle shifter. Customers may experience the following:When trying to upshift using the paddle shifter on the steering, the transmission will downshift instead.
W41 Combo2020-08-24. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Customer Satisfaction Notification W41 Reprogram Powertrain Control Module
90037042020-08-24. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; POWER TRAIN. Transmission Oil Pan, Heater (TMU), Tube or O-ring Applies to vehicles equipped with 8 speed transmissions only; if you have a leak that appears to be at the pan the use of proper leak detection is recommended. The fluid in the 8 speeds can be detected with a black light and there are aftermarket spray on leak detection materials to help ensure that the leak is properly diagnosed and not from another location such as cooler lines, heater tubes, or case porosity. Please note that the transmission pan gasket is available for many of the 8 speed applications FCA offers. Please review the available quick connect and transfer tube parts, as replacement of the TMU may not be required. If a TOC line connection is found to be the source, the quick connect may need replacement. If the leak source is coming from the connection of the TMU to the transmission, the transfer tube may need replacement. When parts are returned to the QEC the retaining clips (snap ring) for the quick disconnect fittings are missing. (This leaves a question as to whether the clips were missing from the assembly plant, or the technician removed them in order to make line removal easier.) Please return the clips with the transmission heater and note if they were not there to begin with. For any questions regarding transmission heater, contact FCA Redacted Content. If no response in 15 minutes, proceed with repair.
S20080000632020-05-26. Service bulletin. FUEL SYSTEM, DIESEL; ELECTRICAL SYSTEM; POWER TRAIN. Malfunction Indicator Lamp (MIL) on. Diagnostic Trouble Codes (DTCs) P2463 ? Diesel Particulate Filter Soot Accumulation, and P2453 ? Diesel Particulate Filter Differential Pressure Sensor Circuit Performance Set.
18-096-152019-05-20. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; POWER TRAIN; ENGINE. Flash: Diagnostic And System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. A small number of customers may experience one or more of the symptoms/conditions listed below or a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set. If any of the following DTCs have been set perform the Diagnosis: - U0140 - Lost Communication With Body Control Module. Attempting to clear this DTC will be unsuccessful. - P0300 - Multiple Cylinder Misfire (only applies to 5.7L engines). - P0573 - Brake Switch 1 Stuck Off. The following powertrain system improvements/enhancements are also included in this software release: - Corrected a generic scan tool display issue regarding Mode 6 data accuracy. - Improved transmission Quick Learn routine performance (only applies to 5.7L engines).
18-094-152019-05-20. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN; ENGINE. Flash: 3.0L Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latestavailable software. It also involves the cleaning or replacement of the Exhaust Gas Temperature (EGT) Sensor 1/2 and/or Catalyst Temperature Sensor if necessary depending on Diagnostic Trouble Codes (DTCs) that may have set. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the Technician may find one or more of the following Diagnostic Trouble Codes may have been set: ? P1296-00 - EGR Slow Response - Increasing Flow. ? P249C-00 - Excessive Time To Enter Closed Loop Reductant Injection Timing Control. ? P20C2-00 - Reductant Heater 3 Control Circuit Performance. ? P1297-00 - EGR Slow Response - Decreasing Flow. ? P0420-00 - Catalyst Efficiency (Bank 1). ? P2237-00 - O2 Sensor 1/1 Pump Cell Current Circuit Open. ? P24D1-00 - Particulate Matter Sensor Regeneration Incomplete. ? U0422-00 - Implausible Data Received From Body Control Module. ? P1E0C-00 - Empty Fuel Tank. ? P2463-00 - Diesel Particulate Filter - Soot Accumulation. ? P24A4-00 - Particulate Filter Restriction - Soot Accumulation Too High. ? P241D-00 - Scr Inducement - Forced Engine Shutdown. ? P204F-00 - Reductant System Performance. ? P20E9-00 - Reductant Pressure Too High. ? P1288-00 - NOX Sensor 1/2 Zero Offset Too High. ? P2002-00 - Diesel Particulate Filter Efficiency Below Threshold. ? P2299-00 - Brake Pedal Position / Accelerator Pedal Position Incompatible. ? P208B-00 - Reductant Pump 1 Control Performance. ? P0087-00 - Fuel Rail Pressure Too Low. ? P20EE-00 - SCR NOX Catalyst Efficiency Below Threshold Bank 1. ? P225C-00 - NOX Sensor Performance - Signal Stuck High Bank 1 Sensor 1. ? P225D-00 - NOX Sensor 1/1 Performance - Signal Stuck Low. ? P1289-00 - NOX Sensor 1/2 Zero Offset Too Low. ? P2BA9-00 - NOX Exceedence - Insufficient Reagent
18-023-15 REV-C2018-12-17. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: 3.0 L MIL Illumination Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. It also involves the cleaning or replacement of the Exhaust Gas Temperature (EGT) Sensor 1/2 and/or Catalyst Temperature Sensor if necessary depending on Diagnostic Trouble Codes (DTCs) that may have set. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the Technician may find one or more of the following Diagnostic Trouble Code(s) may have been set: ? P20C2-00 - Reductant Heater 3 Control Circuit Performance. ? P204F-00 - Reductant System Performance. ? P20E9-00 - Reductant Pressure Too High. ? P249C-00 - Excessive Time To Enter Closed Loop Reductant Injection Timing Control. ? P1288-00 - NOX Sensor 1/2 Zero Offset Too High. ? P2002-00 - Diesel Particulate Filter Efficiency Below Threshold. ? P2299-00 - Brake Pedal Position / Accelerator Pedal Position Incompatible. ? P241D-00 - Scr Inducement - Forced Engine Shutdown. ? P0420-00 - Catalyst Efficiency (Bank 1). ? P1297-00 - EGR Slow Response - Decreasing Flow. ? P208B-00 - Reductant Pump 1 Control Performance. ? P0087-00 - Fuel Rail Pressure Too Low. ? P20EE-00 - SCR NOX Catalyst Efficiency Below Threshold Bank 1. ? P225C-00 - NOX Sensor Performance - Signal Stuck High Bank 1 Sensor 1. ? P225D-00 - NOX Sensor 1/1 Performance - Signal Stuck Low. ? P1289-00 - NOX Sensor 1/2 Zero Offset Too Low. ? P1296-00 - EGR Slow Response - Increasing Flow. ? P2BA9-00 - NOX Exceedence - Insufficient Reagent Quality. ? P2080-00 - Exhaust Gas Temperature Sensor Circuit Performance. ? P2084-00 - Exhaust Gas Temperature Sensor Circuit Performance-Bank 1 Sensor 2. ? P0426-00 - Catalyst Temperature Sensor Circuit Performance Bank 1 Sensor 1. ? P242B-00 - Exhaust Gas Temperature Sensor Circuit Performance-Bank 1 Sensor 3. ? P062B-00 - Internal Control M
21-033-152018-11-26. Service bulletin. POWER TRAIN. Flash: Transmission Shift And Drivability Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software followed by a drive validation. The following software enhancement, for the 948TE 9-speed transmission, is being released to improve diagnostics for the following Diagnostic Trouble Codes (DTCs): ? P0711 - Transmission Fluid Temperature Sensor A Circuit Range-Performance ? P0887 - TCM Power Control Circuit High ? P1720 - Output Speed Sensor-Wheel Speed Rationality ? P1D98 - Incorrect Gear Ratio Clutch B or D Defective ? P215C - Output Shaft Speed Wheel Speed Correlation ? U0401 - Implausible Data Received From ECM-PCM The software also enables DTC P07A7 - Transmission Friction Element C Stuck On to set in the case of a dislodged C-clutch snap-ring.
21-005-15 REVA2018-11-26. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Flash: Transmission Shift And Drivability Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) and Transmission Control Module (TCM) with new software. NOTE: Both the PCM and TCM must be up to date for these changes to be effective.
21-005-152018-11-19. Service bulletin. POWER TRAIN; EQUIPMENT; ELECTRICAL SYSTEM. Flash: Transmission Shift And Drivability Enhancements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) and Transmission Control Module (TCM) with new software. NOTE: Both the PCM and TCM must be up to date for these changes to be effective. A small number of customers may experience one or more of the following conditions. ? Will not reach max speed (over 256 kph) during freeway driving. (International Market Only) ? Less than desired upshift quality in Normal or Sport mode ? Shift inhibit while transitioning in/out of MDS mode ? Less than desired downshift quality while coasting with the brake released or while passing. ? Vehicle will not display 2nd gear when entering Manual mode from Snow or ECO mode ? High speed gear hunting (shifting back/forth repeatedly between two gears) ? Will not exceed 20 mph in reverse. ? Less than desired 2nd gear launch quality while in ECO mode ? Unable to launch in 3rd gear in Snow mode in higher altitudes. ? Less than desired shift quality during accelerator pedal tip in/out acceleration during Torque Converter Clutch operation.
21-003-152018-11-19. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT; POWER TRAIN. Flash: 8HP70 Transmission Shift Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. A small number of customers may indicate that the transmission shift quality may not meet their expectations under the following conditions. These concerns are separated by vehicle. WK Vehicles ? ECO mode will not retain settings. If ECO mode is turned off, it will turn back on after the ignition is cycled. ? Less than desired upshift quality in normal drive mode under light/medium acceleration. ? Less than desired Power-on downshift quality (i.e. passing). ? Less than desired powertrain performance while driving at higher altitudes, on steep grades, or during high speed driving. ? Less than desired tip in/out acceleration during torque converter clutch operation. ? Less than desired engagement quality in 4x4 high or 4x4 low range. WD Vehicles ? ECO mode will not retain settings. If ECO mode is turned off, it will turn back on after the ignition is cycled. ? Less than desired engagement quality in 4x4 high or 4x4 low range.
21-004-152018-11-19. Service bulletin. POWER TRAIN; ENGINE; ELECTRICAL SYSTEM. Flash: 845RE Transmission Shift Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. The following TCM calibration improvements are available for vehicles equipped an 845RE Automatic Transmission (Sales Code DFL). These updates are listed by vehicle and engine. LD and LX vehicles equipped with a 3.6L engine (Sales Code ERB) ? Software to correct a harsh bump feel during a 2-1 downshift. ? Software to enable the scan tool based transmission ?Quick Learn.? ? Software to address customer concerns of Malfunction Indicator Lamp (MIL) illumination and Diagnostic Trouble Code (DTC) P215C Output Shaft Speed, Wheel Speed Correlation setting on AWD equipped vehicles. LX and WK vehicles equipped with a 3.0L engine (Sales Code EHD) ? Software to correct a harsh bump feel during a 2-1 downshift. WK vehicles equipped with a 3.6L engine (Sales Code ERB) ? ECO mode will not retain settings. If ECO mode is turned off, it will turn back on after the ignition is cycled. ? Software to correct a harsh bump feel during a 2-1 downshift. DS vehicles equipped with 3.6L engine (Sales Code ERB) ? Software to correct a harsh bump feel during a 2-1 downshift. ? Software to address a customer?s concern of less than desired shift quality in Four Wheel Drive (4wd) Low mode during medium to heavy acceleration. ? Software to address customer concerns of Malfunction Indicator Lamp (MIL) illumination and Diagnostic Trouble Code (DTC) P215C Output Shaft Speed, Wheel Speed Correlation setting on AWD equipped vehicles. ? Software improvements to powertrain braking in Tow/Haul mode. ? Software to improve downshift response from a medium to heavy pedal acceleration. ? Driveability improvements at higher altitudes. ? Software to improve acceleration during cruise control operation ? Software to correct a condition where DTC U11C3 - ESM Lost Communication With TCM On D-Pt CAN may have been displayed inste
21-012-152018-09-24. Service bulletin. EQUIPMENT; POWER TRAIN; ELECTRICAL SYSTEM. Flash: Transmission Shift Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. ? ECO mode will not retain settings. If ECO mode is turned off, it will turn back on after the ignition is cycled. ? 3-2, 2-1 Shift bump on deceleration. ? Less than desired shift quality during hard acceleration. ? Excessive shifts during cruise control operation. ? Intermittent delay shift condition. ? Less than desired engine braking during downhill descent. ? Manual gear selection improvements at higher altitudes. ? Less than desired driveability performance in 4 low. ? Hesitation improvements. ? Inconsistent and/or harsh 1-2, 2-3, 3-4, 4-5 upshifts at moderate throttle. ? Inconsistent and/or harsh lift-foot upshifts. ? Inconsistent and/or harsh coasting 3-2, 2-1 downshifts in Hi or Lo range. ? Ratio fault detection during 1-2 upshift or 8-7 downshift. ? Grade hunting (repeated shifting while ascending a grade). ? 8-7-8 shift busyness when approaching max vehicle speed. ? Undesired gear selection at high altitude. ? Undesired gear selection when driving downhill (not enough powertrain braking). ? Time to exit TIP (manual/paddle shift mode) takes too long. ? Unintended downshifts driving at certain speeds. ? 4-3 coasting downshift may cause excessive engine noise during engine braking. ? Shift hanging when vehicle is started cold. ? Undesired shift toggling in Manual/Paddle Shift mode. ? Lo range selec-speed control 1-2 shift busyness.
08-015-152018-09-24. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN; STEERING. Flash: Gear Shift Indicator System Enhancements This bulletin involves reprogramming the Power Control Module (PCM) with new software. A small number of customers may experience improper gear shift point indications displayed in the EVIC if the paddle shift mode is selected on the steering wheel.
18-023-152018-09-24. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: 3.0 L MIL Illumination Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the Technician may find one or more of the following Diagnostic Trouble Code(s) may have been set: ? P20C2 - Reductant Heater 3 Control Circuit Performance. ? P204F - Reductant System Performance. ? P20E9 - Reductant Pressure Too High. ? P0087-00 - Fuel Rail Pressure Too Low. ? P20EE-00 - SCR NOX Catalyst Efficiency Below Threshold Bank 1. ? P0171-00 - System Too Lean (Bank 1). ? P0172-00 - System Too Rich (Bank 1). ? P225C-00 - NOX Sensor Performance - Signal Stuck High Bank 1 Sensor 1. ? P225D-00 - NOX Sensor 1/1 Performance - Signal Stuck Low. ? P1288-00 - NOX Sensor 1/2 Zero Offset Too High. ? P1289-00 - NOX Sensor 1/2 Zero Offset Too Low. ? P1296-00 - EGR Slow Response - Increasing Flow. ? P1297-00 - EGR Slow Response - Decreasing Flow. ? P2BA9-00 - NOX Exceedence - Insufficient Reagent Quality. ? P2080-00 - Exhaust Gas Temperature Sensor Circuit Performance. ? P2084-00 - Exhaust Gas Temperature Sensor Circuit Performance-Bank 1 Sensor 2. ? P0426-00 - Catalyst Temperature Sensor Circuit Performance Bank 1 Sensor 1. ? P242B-00 - Exhaust Gas Temperature Sensor Circuit Performance-Bank 1 Sensor 3. ? P062B-00 - Internal Control Module Fuel Injector Control Circuit Performance. ? P0088-00 - Fuel Rail Pressure Too High. ? P016F-00 - Closed Loop fuel Pressure Control At Limit - Pressure Too Low. ? P009A-00 - Intake Air Temperature / Ambient Air Temperature Correlation. ? P0234-00 - Turbocharger Overboost Condition. ? P0420-00 - Catalyst Efficiency (Bank 1). ? P050E-00 - Cold Start Engine Exhaust Temperature Too Low. ? P05F8-00 - Reductant Heater Control Module Performance. ? P061B-00 - Internal Control Module Torque Calculation
18-018-14 REV. C2018-06-18. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR; ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL. Flash: MIL Illumination - Remote Start, Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. Some customers may experience a condition that the Remote Start will not start the vehicle in cold 14° F (-10° C) ambient temperatures. Software enhancements will help this issue. Some customers may experience a condition that the Oil Life Monitor shows faster then expected oil life deterioration. Software enhancements will address this issue. Some customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the Technician may find that any of the following Diagnostic Trouble Code(s) may have been set erroneously: ? P0087-00 - FUEL RAIL PRESSURE TOO LOW ? P0088-00 - FUEL RAIL PRESSURE TOO HIGH ? P016F-00 - CLOSED LOOP FUEL PRESSURE CONTROL AT LIMIT - PRESSURE TOO LOW ? P009A-00 - INTAKE AIR TEMPERATURE / AMBIENT AIR TEMPERATURE CORRELATION ? P0234-00 - TURBOCHARGER OVERBOOST CONDITION ? P0420-00 - CATALYST EFFICIENCY (BANK 1) ? P0426-00 - CATALYST TEMPERATURE SENSOR CIRCUIT PERFORMANCE (BANK 1 SENSOR 1) ? P050E-00 - COLD START ENGINE EXHAUST TEMPERATURE TOO LOW ? P05F8-00 REDUCTANT HEATER CONTROL MODULE PERFORMANCE ? P061B-00 - INTERNAL CONTROL MODULE TORQUE CALCULATION PERFORMANCE ? P062B-00 - INTERNAL CONTROL MODULE FUEL INJECTOR CONTROL CIRCUIT PERFORMANCE ? P0128-00 - THERMOSTAT RATIONALITY ? P1D30-00 - OIL VISCOSITY TOO LOW ? P200A-00 - INTAKE MANIFOLD RUNNER PERFORMANCE - BANK 1 ? P200B-00 - INTAKE MANIFOLD RUNNER PERFORMANCE - BANK 2 ? P202E-00 - REDUCTANT INJECTION VALVE CIRCUIT PERFORMANCE ? P203E-00 - REDUCTANT LEVEL SENSOR 1 CIRCUIT INTERMITTENT/ERRATIC ? P204F-00 - REDUCTANT SYSTEM PERFORMANCE ? P2080-00 - EXHAUST GAS TEMPERATURE SENSOR CIRCUIT PERFORMANCE ? P2084-00 - EXHAUST GAS TEMPERATURE SENSOR CIRCUIT PERFORMANCE - BANK 1 SENSOR 2 ? P20BA-00 - REDUCTANT HEATER 1 CONTROL CIRCUI
21-012-14 REV. A2018-06-18. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN. Transmission Shift Enhancements - Adaptation Drive Learn Procedure This bulletin involves performing a subjective shift quality rating when customers experience poor shift quality and if necessary, performing the transmission adaptation learn procedure. In addition, this bulletin involves performing transmission adaptation learn procedure when the transmission is repaired/replaced and/or the valve body/TCU assembly (mechatronic) is replaced, or when the adaptation memory cells are cleared with the wiTECH diagnostic scan tool. Customers may indicate that their transmission shift quality does not meet their expectations.
T012018-06-11. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Customer Satisfaction Notification T01 Reprogram Powertrain Control Module The Powertrain Control Module (PCM) on about 15 of the above vehicles may have received PCM software containing calibration errors when recall S49 was performed. PCM software containing calibration errors may result in the radiator cooling fan producing excessive fan noise during operation. The PCM on involved vehicles must be reprogrammed with new software.
18-018-14 REV. E2018-06-11. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: 3.0 L MIL Illumination Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the Technician may find one or more of the following Diagnostic Trouble Code(s) may have been set: P0087-00 - Fuel Rail Pressure Too Low. P20EE-00 - SCR NOX Catalyst Efficiency Below Threshold Bank 1. P0171-00 - System Too Lean (Bank 1). P0172-00 - System Too Rich (Bank 1). P225C-00 - NOX Sensor Performance - Signal Stuck High Bank 1 Sensor 1. P225D-00 - NOX Sensor 1/1 Performance - Signal Stuck Low. P1288-00 - NOX Sensor 1/2 Zero Offset Too High. P1289-00 - NOX Sensor 1/2 Zero Offset Too Low. P1296-00 - EGR Slow Response - Increasing Flow. P1297-00 - EGR Slow Response - Decreasing Flow. P2BA9-00 - NOX Exceedence - Insufficient Reagent Quality. P2080-00 - Exhaust Gas Temperature Sensor Circuit Performance. P2084-00 - Exhaust Gas Temperature Sensor Circuit Performance-Bank 1 Sensor 2. P0426-00 - Catalyst Temperature Sensor Circuit Performance Bank 1 Sensor 1. P242B-00 - Exhaust Gas Temperature Sensor Circuit Performance-Bank 1 Sensor 3. P062B-00 - Internal Control Module Fuel Injector Control Circuit Performance. P0088-00 - Fuel Rail Pressure Too High. P016F-00 - Closed Loop fuel Pressure Control At Limit - Pressure Too Low. P009A-00 - Intake Air Temperature / Ambient Air Temperature Correlation. P0234-00 - Turbocharger Overboost Condition. P0420-00 - Catalyst Efficiency (Bank 1). P050E-00 - Cold Start Engine Exhaust Temperature Too Low. P05F8-00 - Reductant Heater Control Module Performance. P061B-00 - Internal Control Module Torque Calculation Performance. P0128-00 - Thermostat Rationality P1D30-00 - Oil Viscosity Too Low P200A-00 - Intake Manifold Runner Performance - Bank 1 P200B-00 - Intake Manifold Runner Performance - Bank 2
18-019-14 REV.A2018-06-11. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN. Flash: Power Control Module Software Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. The customers may experience one or all of the following: - Customer may experience a "detonation" type of noise while accelerating or at idle. - Customers may experience Cruise Control lock out (inoperative) after several ?+? cruise button inputs attempting to increase Cruise Set Speed. Turning the ignition off and back on will clear the condition. - MIL light illuminates and DTC P2463-00 "Diesel Particulate Filter- Soot Accumulation" set in the PCM.
21-003-14 REV. A2018-06-11. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE. Flash: 845RE Transmission Shift Enhancements, 2-1 Downshift This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. The following TCM calibration improvements are available for vehicles equipped an 845RE Automatic Transmission (Sales Code DFL). These updates are listed by vehicle and engine.LD and LX vehicles equipped with a 3.6L engine (Sales Code ERB) Software to correct a harsh bump feel during a 2-1 downshift. Software to enable the scan tool based transmission ?Quick Learn.? Software to address customer concerns of Malfunction Indicator Lamp (MIL) illumination and Diagnostic Trouble Code (DTC) P215C Output Shaft Speed, Wheel Speed Correlation setting on AWD equipped vehicles.LX and WK vehicles equipped with a 3.0L engine (Sales Code EHD) Software to correct a harsh bump feel during a 2-1 downshift.WK vehicles equipped with a 3.6L engine (Sales Code ERB) Software to correct a harsh bump feel during a 2-1 downshift.DS vehicles equipped with 3.6L engine (Sales Code ERB) Software to correct a harsh bump feel during a 2-1 downshift. Software to address a customer?s concern of less than desired shift quality in Four Wheel Drive (4wd) Low mode during medium to heavy acceleration. Software to address customer concerns of Malfunction Indicator Lamp (MIL) illumination and Diagnostic Trouble Code (DTC) P215C Output Shaft Speed, Wheel Speed Correlation setting on AWD equipped vehicles. Software improvements to powertrain braking in Tow/Haul mode. Software to improve downshift response from a medium to heavy pedal acceleration. Driveability improvements at higher altitudes. Software to improve acceleration during cruise control operation Software to correct a condition where DTC U11C3 - ESM Lost Communication With TCM On D-Pt CAN may have been displayed instead of U11E3 - TCM Lost communication with ESM On D-PT CAN.WD vehicles equipped with a 3.6L engine (Sales Code ERB)
21-017-14 REV. A2018-06-11. Service bulletin. POWER TRAIN. Flash: Transmission Shift And Driveability Enhancements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) and Transmission Control Module (TCM) with new software.Both the PCM and TCM must be up to date for these changes to be effective. The customer may indicate that they are not satisfied with the shift quality of the transmission. Improvements to the transmission calibration have been made to the following:Upshift Improvements Shift quality in Normal Mode Shift quality in Sport Mode Shift inhibit while transitioning in/out of MDSDownshift Improvements Downshift quality while accelerating Downshift quality while coastingGeneral Improvements Torque converter clutch control during interlocked downshifts Torque converter clutch control during accelerator pedal tip in/out High speed gear hunting (shifting back/forth repeatedly between two gears) Allow 3rd gear launch at high altitude while in Snow Mode 2nd gear launch quality in ECO mode Improved reverse speed Display 2nd gear when entering Manual Mode from Snow or ECO Mode
21-030-14 REV. A2018-06-11. Service bulletin. POWER TRAIN. 845RE Transmission Quick Learn Procedure This bulletin provides information on how to perform the new scan tool based transmission Quick Learn procedure. This procedure is required after certain transmission repairs or to improve a customer's concern of poor shift quality. Customers may indicate that their transmission shift quality does not meet their expectations.
21-030-142018-06-11. Service bulletin. POWER TRAIN. 845RE Transmission Quick Learn Procedure This bulletin provides information on how to perform the new scan tool based transmission Quick Learn procedure. This procedure is required after certain transmission repairs or to remedy a customer?s concern of poor shift quality. Customers may indicate that their transmission shift quality does not meet their expectations.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.