Ram bulletin 21-056-26
Ram filed this with NHTSA as a service bulletin dated Jul 9, 2026, received Jul 18, 2026, about the power train. It names 1 model year (2021). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationFlash: 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.
Document filed under this number
| Document | Kind | Dated | NHTSA id |
|---|---|---|---|
| 21-056-26 | Service bulletin | Jul 9, 2026 | 11035058 |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5; the full text comes from the manufacturer or a dealer. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. Quote it at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Common questions
Source: NHTSA, 49 CFR 579.5Is Ram 21-056-26 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the 21-056-26 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way.
Which vehicles does 21-056-26 cover?
The manufacturer filed it against 1 model year: 2021 Ram 1500. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.