Dodge bulletin 21-033-24
What it says"Flash: Drivetrain Control Module (DTCM) Updates **The Technician must experience an Anti-Lock Brake Systems (ABS) code when requesting a Vehicle Scan Report (VSR): U1767-87 - Drive Train Control Module Node (DTCM)… NHTSA’s full summary ↓
Dodge filed this with NHTSA as a service bulletin dated May 17, 2024, received Jun 7, 2024, about the service brakes. It names 1 model year (2023). 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.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communication"Flash: Drivetrain Control Module (DTCM) Updates **The Technician must experience an Anti-Lock Brake Systems (ABS) code when requesting a Vehicle Scan Report (VSR): ● U1767-87 - Drive Train Control Module Node (DTCM) Drive Train1 Missing.** Customers may experience no difference switching between Auto Mode and Sport mode in All Wheel Drive Systems during high speed maneuvers or snowy/icy conditions. This bulletin involves reprogramming the DTCM with the latest available software."
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 21-033-24 | Service bulletin | May 17, 2024 | 11001254 | PDF, 132 KB |
What the document itself lists
Labour operation and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 18-19-07-AP | Module, Drivetrain Control (DTCM) - Reprogram | 0.2 hrs |
Read by machine from the document NHTSA serves (2 pages), read Sep 30, 2026. A part number is shown only where it matches Dodge’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
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The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. 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. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number 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.
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What owners reported
Source: NHTSA complaint databaseOwners of the 1 model year this bulletin names have filed 26 complaints with NHTSA since 2015.
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the service brakes
Source: same model, same component group4 other manufacturer communications filed against the Dodge Hornet under the same component group (service brakes), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| S1705000002 REV. A | Service bulletin | Oct 16, 2026 | Front Brake Pulsation and/or Clunk Noise |
| 21-038-24 | Service bulletin | May 23, 2024 | "Flash: Drivetrain Control Module (DTCM) Updates **The Technician may experience an Anti-Lock Brake Systems (ABS) code when requesting a Veh… |
| 9100186 | Service bulletin | Jul 17, 2023 | Brake Vacuum Pump For DTC Code P258B. Due to brake vacuum pumps being returned with trouble not found, please follow the proper diagnostics… |
| S2308000056 | Service bulletin | Jun 9, 2023 | Automatic Braking Applied When the Owner Has no Brake Pedal Depressed, Cluster Displays a Hold Indicator Warning |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Dodge, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Dodge 21-033-24 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 21-033-24 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. Every Stellantis warranty extension on file lists the ones Stellantis has filed.
Which vehicles does 21-033-24 cover?
The manufacturer filed it against 1 model year: 2023 Dodge Hornet. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.