# Service bulletin 0808621

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: 10230124
- Published by NHTSA: 2023\-01\-17
- Manufacturer's number: 0808621
- Manufacturer's date: 2021\-05\-15
- NHTSA component: VISIBILITY; VEHICLE SPEED CONTROL; AIR BAGS; ELECTRICAL SYSTEM; POWER TRAIN

## NHTSA's summary

Flash: Driver Door Module \(DDM\) and Passenger Door Module \(PDM\) Updates This bulletin involves reprogramming the DDM and PDM with the latest available software. This software is for vehicles on the RRT VIN List is to improve the function and reliability of the power windows operation.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10230124-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10230124-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Air bags, Electrical system, Glass, wipers and mirrors, Throttle and cruise control, Transmission and driveline

## Vehicles listed

- 2021 RAM 1500

## Recalls for the same vehicles and component

- [2026347](/recalls/tc/2026347.md), 2026-07-16: Visual System
- [2025613](/recalls/tc/2025613.md), 2025-11-06: Airbag
- [25V765000](/recalls/nhtsa/25V765000.md), 2025-11-06: STEERING:STEERING CONTROL MODULE; AIR BAGS:FRONTAL
- [25V298000](/recalls/nhtsa/25V298000.md), 2025-05-08: AIR BAGS; ELECTRICAL SYSTEM:WIRING
- [2024596](/recalls/tc/2024596.md), 2024-10-10: Visual System
- [24V754000](/recalls/nhtsa/24V754000.md), 2024-10-10: VISIBILITY:REARVIEW MIRRORS/DEVICES
- [23V265000](/recalls/nhtsa/23V265000.md), 2023-04-13: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)
- [2023047](/recalls/tc/2023047.md), 2023-02-09: Visual System
- [2022476](/recalls/tc/2022476.md), 2022-08-25: Visual System
- [2021722](/recalls/tc/2021722.md), 2021-11-24: Airbag

## Other bulletins for the same vehicles and component

- [S2623000057](/bulletins/11038555.md), 2026-10-16, Service bulletin: AIR BAGS. After Recent Service, A Replacement Occupant Classification Module \(OCM\) Is Non\-Responsive.
- [S2623000057](/bulletins/11038518.md), 2026-10-16, Service bulletin: AIR BAGS. After Recent Service, A Replacement Occupant Classification Module \(OCM\) Is Non\-Responsive.
- [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 \(850RE Transmission Only\)
- [114072](/bulletins/11036362.md), 2026-08-26, Service bulletin: ELECTRICAL SYSTEM. MOTOR \- WINDOW REGULATOR
- [114073](/bulletins/11036361.md), 2026-08-26, Service bulletin: ELECTRICAL SYSTEM. MOTOR \- WINDOW REGULATOR
- [S2608000033](/bulletins/11035198.md), 2026-07-23, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. Cluster Message “To Operate Tailgate Shift to Park” Vehicle is In Park
- [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.
- [113069](/bulletins/11034910.md), 2026-07-08, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. SWITCH – HEADLAMP
- [113070](/bulletins/11034909.md), 2026-07-08, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. SWITCH – HEADLAMP
- [S1623000028 Rev. K](/bulletins/11033975.md), 2026-06-18, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.

JSON: [/v1/bulletins/10230124](/v1/bulletins/10230124)

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