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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
21-012-14 REV. B2018-06-11. Service bulletin. POWER TRAIN. 8 Speed Transmission Shift Adaptation, Drive Learn Procedure This bulletin involves performing a Transmission Adaptation Learn procedure based on a subjective shift quality rating evaluation.The adaptation drive learn procedure must be performed on all 8-speed transmissions 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.
21-036-142018-06-11. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Flash: Drivetrain Control Module (DTCM), Driveline Bump Sensation During Low Speed Transmission Downshifts This bulletin involves selectively erasing and reprogramming the Drivetrain Control Module (DTCM). A small number of customers may experience a driveline bump sensation during low speed transmission downshifts. This condition typically occurs in speeds less than 15 mph (24 kph) during a 2-1 downshift.
21-026-142018-06-11. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Transmission Shift Enhancements This bulletin involves flash reprogramming of the Transmission Control Module (TCM) with new software. Some customers may experience any or all of the following transmission shift concerns. 3-2, 2-1 Shift bump on deceleration. Shift quality during hard acceleration. Excessive shifts during cruise control operation. Intermittent delay shift condition. Engine braking improvements during downhill descent. Manual gear selection improvements at higher altitudes. Drivability improvements 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.
21-017-142018-06-11. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Flash: Transmission Shift 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. 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 MDS Downshift Improvements ? Downshift quality while accelerating ? Downshift quality while coasting General 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
21-012-142018-06-11. Service bulletin. 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.
18-008-14 REV. A2018-05-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: MIL Illumination P0300- Multiple Cylinder Misfire and/or P0573- Brake Switch 1 Stuck Off This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the Technician may find that the following Diagnostic Trouble Codes have been set: (only applies to 5.7L engines) P0573 - Brake Switch 1 Stuck OffThe following powertrain system improvements/enhancements are also included in this software release: Corrected a generic scan tool display issue regarding Mode 6 data accuracy. (only applies to 5.7L engines)
18-019-142018-05-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: Cruise Control Inoperative and/or Knocking (Detonation) Sound This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. A small number of 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.Some vehicles equipped with Euro 4 Emissions (sales code NB4) may experience a knocking noise due to detonation.
21-009-142018-05-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Flash: Improved Rolling Reverse to Drive Shift Quality This bulletin involves flash reprogramming of the Transmission Control Module (TCM) with new software. Customers may indicate that the rolling reverse to drive shift quality may not meet their expectations.
21-007-142018-05-21. Service bulletin. EQUIPMENT; POWER TRAIN. Difficult Shifting Into 1st And 2nd Gear This bulletin involves inspecting and adjusting the manual transmission shift cable Difficult shifting into 1st and/or 2nd gears may be due to any of the following conditions; A. Gearshift Select cable improperly adjusted. B. Gearshift cables not seated at shifter. C. Gearshift cables not seated at transmission. D. Neutral sensor rotated out of position.
21-004-142018-05-21. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: Shift Quality Improvements This bulletin involves flash reprogramming of the Transmission Control Module (TCM) with new software. Customers may indicate that the shift quality may not meet their expectations under the following conditions:Upshift Improvements Upshift quality in normal mode under light/medium accelerationDownshift Improvements Power-on downshift qualityGeneral Improvements Altitude drivability High speed drivability Grade drivability ECO mode drivability Torque converter clutch control on engagement and tip-in/out General engagement quality in 4X4 high and 4X4 low range
90031992017-11-03. Service bulletin. STEERING; POWER TRAIN. Steering Column If vehicle comes in for steering column replacement, verify column installed. Go to Info Column in Star Parts and open the flow chart to determine which column is installed. If column is Daimler, verify that a replacement Daimler column is in stock and use for replacement. If no Daimler column is in stock, replacement must use Presta column (which require a number of other components to be replaced). For more information and details on PN's, see W-Series Flowchart in Star Parts. Contact parts specifying for assistance regarding correct part numbers, for technical assistance contact Star. UPDATE: 11/9/2016 If the new bearing does not fit through the double dash, you need to replace the lower double dash panel to the latest level. Please see the updated flowchart in StarParts for the correct replacement panel.
21-029-162017-11-03. Service bulletin. ELECTRICAL SYSTEM; ENGINE; POWER TRAIN; FUEL SYSTEM, GASOLINE. Flash: Transmission Shift And Drivability Enhancements Flash: Transmission Shift And Drivability Enhancements Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Codes (DTCs) have been set: · **P1115 - General Temperature Rationality. · P0441 - EVAP Purge System Performance. · P0456 - EVAP System Small Leak. · P030X - Cylinder x Misfire Detection. · P0335 - Crankshaft Position Sensor Circuit. · P0122 - Throttle Position Sensor 1 Circuit Low. · P0123 - Throttle Position Sensor 1 Circuit High. · P0222 - Throttle Position Sensor 2 Circuit Low. · P0223 - Throttle Position Sensor 2 Circuit High. · P2299 - Brake Pedal Position/Accelerator Pedal Position Incompatible. · P2610 - PCM Internal Engine Off Timer Performance.** · P0171 - Fuel System 1/1 Lean. · P0174 - Fuel System 2/1 Lean. The customer may also notice the following conditions: · False detonation (spark knock) detected during a Wide Open Throttle (WOT) (North American Market Only). · 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 32 kph (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 durin
18-055-16 REV. A2017-11-03. Service bulletin. ENGINE; ELECTRICAL SYSTEM; POWER TRAIN. Flash: Powertrain Diagnostic and System Improvements This bulletin involves reprogramming the PCM with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation a technician may find the following DTCs set in the PCM memory: · **P0335 - Crankshaft Position Sensor Circuit. · P0456 - Evaporative System Small Leak (applies to 2014 MY only). · P2299 - Brake Pedal Position/Accelerator Pedal Position Incompatible (applies to 2015 MY only).** · P0456 - EVAP System Small Leak. · P0301 - Cylinder 1 Misfire. · P0302 - Cylinder 2 Misfire. · P0303 - Cylinder 3 Misfire. · P0304 - Cylinder 4 Misfire. · P0305 - Cylinder 5 Misfire. · P0306 - Cylinder 6 Misfire · P0300 - Multiple Cylinder Misfire. · P0513 - Invalid SKIM Key.
SB-18-023-15-C2016-06-22. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). SUMMARY TO BE PROVIDED ON A FUTURE DATE.
21-012-142016-06-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
21-036-142016-05-09. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
21-036-142016-05-09. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
21-030-142016-05-09. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
21-030-14REV.A2016-05-09. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
16-002-132016-04-26. Service bulletin. POWER TRAIN:DRIVELINE:UNIVERSAL JOINT. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
30-001-14 REV2015-04-20. Service bulletin. POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT. CHRYSLER: SEE DOCUMENT SEARCH BUTTON FOR OWNERS LETTER. DODGE DURANGO, JEEP GRAND CHEROKEE: FRONT HALF BOOT CLAMPS ON ABOVE VEHICLES MAY HAVE BEEN INCOORECTLY INSTALLED, WHICH COULD ALLOW GREASE FROM THE CV JOINT TO LEAK WHILE DRIVING. *LJ
SB-18-008-142014-05-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE; ELECTRICAL SYSTEM:SOFTWARE. JEEP/DODGE: DIAGNOSTIC TROUBLE CODES (DTCS) ARE SET ON MULTIPLE CYLINDER MISFIRE, BRAKE SWITCH 1 STUCK OFF CAUSING MALFUNCTION INDICATOR LAMP (MIL) TO ILLUMINATE AND NEW SOFTWARE FOR SELECTIVE ERASING AND REPROGRAMMING OF POWERTRAIN CONTROL MODULE (PCM). MODEL 2014 GRAND CHEROKEE, DURANGO. *PE
SB-21-011-132014-03-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM:SOFTWARE. JEEP: THE TRANSMISSION CONTROL MODULE (TCM) NEEDS TO HAVE NEW SOFTWARE REPROGRAMMED DUE TO MULTIPLE SHIFTING ISSUES. MODEL 2014 GRAND CHEROKEE. *PE

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