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Service bulletins for the 2021 Ram 1500

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.

1129 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Trailer hitch are shown. Show all

Bulletins, newest first
S21080001102023-01-17. Service bulletin. TRAILER HITCHES; SERVICE BRAKES, HYDRAULIC; BACK OVER PREVENTION. IPC (Instrument Panel Cluster) Sets DTC U013A-00 - Lost Communication with Trailer Tire Pressure Monitor Module
90044702022-11-07. Service bulletin. STRUCTURE:BODY:BUMPERS; ELECTRICAL SYSTEM:WIRING:CONNECTORS/PLUGS/RECEPTACLES; TRAILER HITCHES. CONNECTOR Trailer Tow,WIRING Trailer Tow,CONNECTOR 7 Way,WIRING Rear Bumper If the connector or wiring is physically damaged, burned, melted or corroded, prior to replacing the part, please contact FCA Redacted Content If no response in 15 minutes, proceed with repair. Please send pictures of the failed part to FCA Redacted Content
S21080001102022-10-17. Service bulletin. TRAILER HITCHES; TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS. IPC (Instrument Panel Cluster) Sets DTC U013A-00 - Lost Communication with Trailer Tire Pressure Monitor Module
S21080001102022-10-17. Service bulletin. SERVICE BRAKES, HYDRAULIC; TRAILER HITCHES; BACK OVER PREVENTION. IPC (Instrument Panel Cluster) Sets DTC U013A-00 - Lost Communication with Trailer Tire Pressure Monitor Module
90044702022-10-17. Service bulletin. TRAILER HITCHES. CONNECTOR/WIRING, Trailer Tow If the connector or wiring is physically damaged, burned, melted or corroded, prior to replacing the part, please contact FCA Redacted Content If no response in 15 minutes, proceed with repair. Please send pictures of the failed part to FCA Redacted Content
90044702022-09-26. Service bulletin. TRAILER HITCHES; ELECTRICAL SYSTEM:WIRING. CONNECTOR/WIRING, Trailer Tow If the connector or wiring is physically damaged, burned, melted or corroded, prior to replacing the part, please contact FCA Redacted Content If no response in 15 minutes, proceed with repair. Please send pictures of the failed part to FCA Redacted Content
S2108000003 Rev.2022-07-18. Service bulletin. WHEELS; LANE DEPARTURE; STEERING; TRAILER HITCHES; VISIBILITY. Cluster Displays Blind Spot Alert Off Incompatible Trailer Message, Left Steering Wheel Switches Do Not Allow Update Or Change
90044702022-06-27. Service bulletin. ELECTRICAL SYSTEM:WIRING; TRAILER HITCHES. CONNECTOR/WIRING, Trailer Tow If the connector or wiring is physically damaged, burned, melted or corroded, prior to replacing the part, please contact FCA Redacted Content If no response in 15 minutes, proceed with repair. Please send pictures of the failed part to FCA Redacted Content
03-005-212021-12-13. Service bulletin. SUSPENSION; TRAILER HITCHES. Rear Axle Vibration, Shudder Or Chatter This bulletin involves changing the rear axle lube to possibly address a chatter, shudder or vibration. The customer may describe the following:A chatter, shudder, or vibration from the rear axle during turns. This may happen more as the vehicle ages, especially if the vehicle is used extensively for towing or hauling heavy loads. The cause of the concern may be due to degradation of the rear axle fluid. It is very important to follow the routine maintenance schedules on these vehicles when it comes to changing the rear axlefluid if the vehicle is used primarily for towing or hauling heavy loads. If you experience a vehicle with the above condition, please perform the proper maintenance procedures for the rear axle and replace the fluid first before replacing any hardware components.This service bulletin is only applicable to vehicles that have no history of an axle fluid replacement. If the vehicle usage includes police, taxi, fleet, off-road or frequent trailer towing, regular axle fluid changes are required every3 years or 30,000 miles (whichever comes first) per the Maintenance Schedule in the vehicle Owner's Manual.

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