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Service bulletins for the 2017 Chrysler Pacifica

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.

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

By type

By component

By trouble code

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

Bulletins, newest first
21-018-162018-06-18. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM:IGNITION. Flash: Transmission Diagnostic And Shift Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination and/or one of the following conditions. Upon further investigation, a technician may find the following Diagnostic Trouble Code (DTC) stored in the TCM memory: · P1DDE-00 - Ignition Run/Start Input 1-2 Correlation.
18-057-162018-06-18. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:ABS WARNING LIGHT; POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER. Flash: 3.6L Powertrain Diagnostic And System Enhancements 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 and/or one of the following conditions. Upon further investigation, a technician may find the following Diagnostic Trouble Code (DTC) stored in the Anti-lock Brake System (ABS) Module memory: NOTE: The Diagnostic Trouble Code (DTC) is caused by a calibration in the PCM that is in conflict with the ABS Module programming. The new software flash will correct this issue. · C121C-00 - Torque Request Signal Denied.
18-057-16 REV. A2018-06-11. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Flash: 3.6L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find the following Diagnostic Trouble Codes (DTCs) have been set: · **P1D73 - AGS Performance - (Active Grill Shutter). · P0171 - Fuel System 1/1 Lean. · P0174 - Fuel System 2/1 Lean.** The technician may also find the following DTC stored in the Anti-lock Brake System (ABS) Module memory: NOTE: The Diagnostic Trouble Code (DTC) is caused by a calibration in the PCM that is in conflict with the ABS Module programming. The new software flash will correct this issue. · C121C-00 - Torque Request Signal Denied. **This software release also includes: · Transmission quick learn. · Engine enhancements.**
21-022-162018-06-11. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Transmission Shift And Drivability Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. Some customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find the following Diagnostic Trouble Code (DTC) stored in the TCM memory: · P1CC9 - Unable To Engage Gear.
18-054-17 REV. A2018-06-04. Service bulletin. POWER TRAIN. Flash: Powertrain Diagnostic and System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set:U1431 - Implausible Data Received From Cruise Control Module.P24B9 - EVAP System Leak Detection Pump Pressure Sensor Circuit Range/Performance. P0300 - Multiple Cylinder Misfire. P1C64-00 - Hybrid Perf Engine Speed Below Target During Autostart.
21-027-172018-06-04. Service bulletin. POWER TRAIN. Flash: Transmission Shift and Drivability Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. Some customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find the following Diagnostic Trouble Codes (DTCs) stored in the TCM memory:P1B13-00 - Park by Wire Unintended Out Of Park Position. P1DCD-00 - TCM Monitoring Processor Performance Multiple Clutches Locked Up. U0103-00 - Lost Communication With Electric Gear Shift Module. P1CC9 - Unable To Engage Gear. P1DDE-00 - Ignition Run/Start Input 1-2 Correlation. The following improvement is also included in this update:Shifter interlocking improvement in an event of brake signal loss to the TCM.
90037302018-06-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SI-eVT Transmission - China Variant The service SI-eVT is shipped with a non-China wiring harness (68241331AC). China market replacement must replace wiring harness with 68368596AA. The China variant 68368596AA wiring harness has an interlock to the electrical charge door.
90036492017-11-03. Service bulletin. POWER TRAIN:AXLE HUBS. Halfshaft When replacing this component it is required that the hub nut; 06509298AA, be replaced at the same time. Ensure the hub nut is torqued to the service manual specifications for this vehicle. The torque specification for the hub nut is 163 N.m or 120 Ft.Lbs.
90036452017-11-03. Service bulletin. POWER TRAIN:AXLE HUBS. Hub Nut The torque specifications for this component is 163 N.m or 120 Ft.Lbs. When replacing this component ensure that the component is NOT over torqued.
90037852017-11-03. Service bulletin. POWER TRAIN. Transmission If are working on a vehicle with a transmission concern that has DTC U0402 please call Jason LeBeau at (248) 613-7488 prior to working on the unit. If Jason cannot be reached within 15 minutes proceed with the repair.
21-022-162016-09-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. "FLASH: TRANSMISSION SHIFT AND DRIVABILITY ENHANCEMENTS THIS BULLETIN INVOLVES REPROGRAMMING THE TRANSMISSION CONTROL MODULE (TCM) WITH THE LATEST AVAILABLE SOFTWARE. SOME CUSTOMERS MAY EXPERIENCE A MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATION. UPON FURTHER INVESTIGATION, A TECHNICIAN MAY FIND THE FOLLOWING DIAGNOSTIC TROUBLE CODE (DTC) STORED IN THE TCM MEMORY: · P1CC9 - UNABLE TO ENGAGE GEAR."

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