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Warranty extension 100599

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeWarranty extension
NHTSA id11007994
Published by NHTSA2024-09-24
Manufacturer's number100599
Manufacturer's date2024-09-18
NHTSA componentPOWER TRAIN
Manufacturer's systemRear Axle

NHTSA's summary

FCA Caribbean Warranty Bulletin ID-24-16 Rev. Announces the addition of the Rear Axle Assembly replacement for 2019 - 2024 RAM 3500 Cab Chassis (DD), RAM 4500/ 5500 Cab Chassis (DP), RAM 3500 Pickup (D2), RAM 2500 Pickup (DJ), RAM 1500 Pickup (DS) and RAM 1500 Pickup (DT) vehicles to the Powertrain Pre-Authorization program to ensure proper repair of Rear Axle Assembly failures and to assist in quality improvements. REV.A

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline

Vehicles listed
RAM 15002019, 2020, 2021, 2022, 2023, 2024
RAM 25002019, 2020, 2021, 2022, 2023, 2024
RAM 35002019, 2020, 2021, 2022, 2023, 2024
RAM 45002019, 2020, 2021, 2022, 2023, 2024
RAM 55002019, 2020, 2021, 2022, 2023, 2024

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20262252026-05-07. Powertrain
26V2880002026-05-07. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
20243252024-06-06. Powertrain
24V4130002024-06-06. POWER TRAIN:MANUAL TRANSMISSION; POWER TRAIN:AUTOMATIC TRANSMISSION
23V2650002023-04-13. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
20226442022-11-10. Powertrain
22V8350002022-11-10. POWER TRAIN:AUTOMATIC TRANSMISSION
20204012020-08-28. Powertrain
20V0800002020-02-13. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE)
20200252020-01-24. Powertrain

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
S26210000042026-10-07. Service bulletin. 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)
21-057-262026-07-18. Service bulletin. 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). This bulletin involves reprogramming the TCM with the latest available software.
21-056-262026-07-18. Service bulletin. 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.
21-055-262026-07-18. Service bulletin. 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). This bulletin involves reprogramming the TCM with the latest available software.
21-054-262026-07-18. Service bulletin. 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).
9100841 Rev 12026-07-02. Service bulletin. If customer concern diagnosis leads to suspect u-joint issue with the prop shaft, u-joint service kit should be utilized to fix concern. Prop shaft replacement would not be required.
91008412026-07-02. Service bulletin. HD Front and Rear Prop Shafts Increase U-Joint Usage If customer concern diagnosis leads to suspect u-joint issue or failure with the prop shaft, u-joint service kit should be utilized to fix concern. Prop shaft replacement would not be required.
21-039-262026-05-20. Service bulletin. Replace K1 Clutch / Input Shaft Assembly Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P0731-00 - Gear 1 Shift Incorrect Ratio (This DTC will set during a key cycle and shifting into Drive). Customers must also comment on the following: ● The transmission will not shift into or out of 1st - 4th gears. 5th and reverse gears are still available This bulletin involves replacing the K1 clutch and possibly the K1 input shaft drum sub-assembly. These repairs are to be performed only if the vehicle is inoperable due to K1 clutch failure
21-039-262026-05-13. Service bulletin. Replace K1 Clutch / Input Shaft Assembly Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P0731-00 - Gear 1 Shift Incorrect Ratio (This DTC will set during a key cycle and shifting into Drive). Customers must also comment on the following: ● The transmission will not shift into or out of 1st - 4th gears. 5th and reverse gears are still available This bulletin involves replacing the K1 clutch and possibly the K1 input shaft drum sub-assembly. These repairs are to be performed only if the vehicle is inoperable due to K1 clutch failure
S2621000003 REV.A2026-03-18. Service bulletin. The vehicle will exhibit a service transmission/check engine warning indicator for the following transmission models: 845RE, 8HP45, 850RE, 8HP50, 8HP70, 8HP75, 8HP75-PHEV, 8HP75-LCV, 8HP90, 8HP95. Transmissions may exhibit the following diagnostic codes: P07E4, P1DB2, P0716, P1B14, P0733, P1D90, P1DB7, P1B13.