# Service bulletin S1821000001 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. - Type: Service bulletin - NHTSA id: 10221150 - Published by NHTSA: 2022\-09\-26 - Manufacturer's number: S1821000001 - Manufacturer's date: 2021\-04\-16 - NHTSA component: POWER TRAIN ## NHTSA's summary Gear Ratio DTC?s, Transmission Shift Concerns, Does Not Shift At Times, Shudders ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10221150-0001.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10221150-9999.pdf) The document is the manufacturer's. This site does not hold it. ## Components Transmission and driveline ## Vehicles listed - 2014 to 2016 ALFA ROMEO 4C - 2015 to 2017 ALFA ROMEO 4C SPIDER - 2018 ALFA ROMEO 4C - 2017 to 2021 ALFA ROMEO GIULIA - 2017 ALFA ROMEO STELVIO - 2018 to 2021 ALFA ROMEO STELVIO - 2012 to 2017 CHRYSLER 200 - 2018 CHRYSLER 200 - 2012 to 2021 CHRYSLER 300 - 2020 to 2021 CHRYSLER 300 AWD - 2012 to 2017 CHRYSLER 300C - 2012 to 2013 CHRYSLER GRAND VOYAGER - 2015 to 2016 CHRYSLER GRAND VOYAGER - 2016 CHRYSLER PACIFICA - 2017 to 2021 CHRYSLER PACIFICA - 2017 to 2020 CHRYSLER PACIFICA PLUG\-IN HYBRID - 2012 to 2013 CHRYSLER SEBRING - 2012 to 2016 CHRYSLER TOWN AND COUNTRY - 2017 to 2018 CHRYSLER TOWN AND COUNTRY - 2012 to 2013 CHRYSLER VOYAGER - 2020 to 2021 CHRYSLER VOYAGER - 2012 to 2014 DODGE AVENGER - 2015 to 2016 DODGE AVENGER - 2012 DODGE CALIBER - 2012 to 2020 DODGE CARAVAN - 2012 DODGE CARGO VAN - 2012 to 2021 DODGE CHALLENGER - 2012 to 2021 DODGE CHARGER - 2012 to 2014 DODGE CHARGER POLICE - 2013 to 2016 DODGE DART - 2012 to 2021 DODGE DURANGO - 2012 to 2020 DODGE GRAND CARAVAN - 2012 to 2020 DODGE JOURNEY - 2012 DODGE NITRO - 2012 DODGE RAM 1500 - 2012 DODGE RAM 2500 - 2012 DODGE RAM 3500 - 2012 DODGE RAM 4500 - 2012 DODGE RAM 5500 - 2013 to 2015 DODGE VIPER - 2016 to 2017 DODGE VIPER COUPE - FCA FCA - 2017 to 2020 FIAT 124 SPIDER - 2012 to 2019 FIAT 500 - 2020 FIAT 500 - 2013 to 2017 FIAT 500E - 2014 to 2016 FIAT 500L - 2016 to 2021 FIAT 500X - 2017 to 2019 FIAT SPIDER - 2014 to 2021 JEEP CHEROKEE - 2012 to 2021 JEEP COMPASS - 2019 JEEP GLADIATOR - 2020 to 2021 JEEP GLADIATOR - 2012 to 2021 JEEP GRAND CHEROKEE - 2021 JEEP GRAND WAGONEER - 2012 JEEP LIBERTY - 2012 to 2018 JEEP PATRIOT - 2015 to 2021 JEEP RENEGADE - 2012 to 2021 JEEP WRANGLER - 2021 JEEP WRANGLER 4XE - 2013 to 2021 RAM 1500 - 2013 to 2021 RAM 2500 - 2013 to 2021 RAM 3500 - 2013 to 2021 RAM 4500 - 2013 to 2021 RAM 5500 - 2013 to 2016 RAM C/V TRADESMAN - 2014 to 2021 RAM PROMASTER - 2015 RAM PROMASTER 2500 - 2016 RAM PROMASTER 3500 - 2015 to 2021 RAM PROMASTER CITY - 2013 to 2016 SRT VIPER - 2012 redundant \-DODGE RAM 1500 ## Recalls for the same vehicles and component - [2026224](/recalls/tc/2026224.md), 2026-05-07: Powertrain - [26V290000](/recalls/nhtsa/26V290000.md), 2026-05-07: POWER TRAIN - [2025012](/recalls/tc/2025012.md), 2025-01-16: Powertrain - [25V011000](/recalls/nhtsa/25V011000.md), 2025-01-16: POWER TRAIN - [24V572000](/recalls/nhtsa/24V572000.md), 2024-08-01: POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE:SOFTWARE - [2023254](/recalls/tc/2023254.md), 2023-04-27: Powertrain - [23V302000](/recalls/nhtsa/23V302000.md), 2023-04-27: POWER TRAIN:AUTOMATIC TRANSMISSION - [23V265000](/recalls/nhtsa/23V265000.md), 2023-04-13: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\) - [2023089](/recalls/tc/2023089.md), 2023-02-23: Powertrain - [23V116000](/recalls/nhtsa/23V116000.md), 2023-02-23: POWER TRAIN:CLUTCH ASSEMBLY ## Other bulletins for the same vehicles and component - [S2621000004](/bulletins/11038329.md), 2026-10-07, Service bulletin: POWER TRAIN. The Customer May Complain About a Popping Noise, Grinding Noise, or an Intermittent No Reverse or Forward Transmission Engagement. The Tech May Find Damaged and/or Worn Transmission Output Shaft Splines \(850RE Transmission Only\) - [114738](/bulletins/11037594.md), 2026-09-30, Service bulletin: POWER TRAIN. TRANSMISSION KIT \- WITH TORQUE CONVERTER - [114737](/bulletins/11037593.md), 2026-09-30, Service bulletin: POWER TRAIN. TRANSMISSION KIT \- WITH TORQUE CONVERTER - [21\-042\-26 REV. B](/bulletins/11037469.md), 2026-09-23, Service bulletin: POWER TRAIN. Not applicable to vehicles built for US market. 1.5L Transmission Diagnosis Service Solution Customers may experience one or more of the following: SYMPTOM: ● Transmission warning light on and/or vehicle jerking. ● Vehicle is not shifting correctly or has no traction. This service bulletin is to provide a diagnostic guide for a transmission warning light on, vehicle jerking, not shifting correctly or no traction symptoms - [08\-292\-26](/bulletins/11035316.md), 2026-07-29, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM. Unable To Clear C1494\-07 And C14A9\-00 After 45A Recall Technicians may experience the following: SYMPTOM: ● wiTECH displays a mismatch error after performing recall 45A. - [113528](/bulletins/11035187.md), 2026-07-23, Service bulletin: POWER TRAIN. SHAFT \- AXLE HALF - [113529](/bulletins/11035186.md), 2026-07-23, Service bulletin: POWER TRAIN. SHAFT \- AXLE HALF - [21\-056\-26](/bulletins/11035058.md), 2026-07-18, Service bulletin: POWER TRAIN. Flash: Transmission Control Module \(TCM\) Updates Customers may comment on one or more of the following: SYMPTOM: ● \*\*Harsh or slipping feeling during upshifts \(1st \- 5th\). ● Harsh or slipping feeling during kickdown events under throttle. ● Transmission fluid odor \(burnt smell\).\*\* ● During a 2 \- 3 transmission upshift, the engine is hitting rev limit. ● Hesitation feel during a pedal tip in, while engine is warming up below 1 °C \(30 °F\) ambient temp. This bulletin involves reprogramming the TCM with the latest available software. - [03\-001\-26](/bulletins/11035038.md), 2026-07-18, Service bulletin: POWER TRAIN. Unable to Complete 01C Recall Drive Cycle C14A7\-97 Active Technicians may experience the following: SYMPTOM: ● After performing Recall 01C, the vehicle may get a 'Service AWD' message on the EVIC. - [21\-042\-26 REV. A](/bulletins/11034905.md), 2026-07-08, Service bulletin: POWER TRAIN. Not applicable to vehicles built for US market. 1.5L Transmission Diagnosis Service Solution Customers may experience one or more of the following: SYMPTOM: ● Transmission warning light on and/or vehicle jerking. ● Vehicle is not shifting correctly or has no traction. This service bulletin is to provide a diagnostic guide for a transmission warning light on, vehicle jerking, not shifting correctly or no traction symptoms. JSON: [/v1/bulletins/10221150](/v1/bulletins/10221150) [Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20S1821000001&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10221150&vehicle=Service%20bulletin%20S1821000001)