# Service bulletin 21\-033\-24

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: 11001254
- Published by NHTSA: 2024\-06\-07
- Manufacturer's number: 21\-033\-24
- Manufacturer's date: 2024\-05\-17
- NHTSA component: SERVICE BRAKES; POWER TRAIN
- Manufacturer's system: Drivetrain Control Module, Anti\-Lock Brake Systems

## NHTSA's summary

"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."

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11001254-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11001254-9999.pdf)

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

## Components

Brakes, Transmission and driveline

## Trouble codes named

U1767

## Vehicles listed

- 2023 DODGE HORNET

## Other bulletins for the same vehicles and component

- [S1705000002 REV.A](/bulletins/11013151.md), 2025-01-28, Service bulletin: SERVICE BRAKES. Front Brake Pulsation and/or Clunk Noise
- [S2308000134 REV.B](/bulletins/11006198.md), 2024-08-08, Service bulletin: FORWARD COLLISION AVOIDANCE: WARNINGS; SERVICE BRAKES. Automatic Emergency Braking \(AEB\) And/Or Forward Collision Warning \(FCW\) Will Shut Off
- [S2408000083](/bulletins/11005274.md), 2024-07-26, Service bulletin: POWER TRAIN. Malfunction Indicator Lamp \(MIL\) on, Start Stop Does Not Operate, Vehicle May Not Start
- [99040](/bulletins/11003055.md), 2024-07-03, Warranty extension: ELECTRICAL SYSTEM; STEERING; SERVICE BRAKES; UNKNOWN OR OTHER. Warranty Operations Newsletter – Volume 10, Issue 6
- [99043](/bulletins/11003053.md), 2024-07-03, Warranty extension: STEERING; SERVICE BRAKES; UNKNOWN OR OTHER; ELECTRICAL SYSTEM. FCA Caribbean Warranty Newsletter – Volume 10, Issue 6
- [2102423](/bulletins/10248602.md), 2024-01-08, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM. Flash: Drivetrain Control Module \(DTCM\) Updates Customers may experience no difference switching between Auto Mode and Sport Mode in the All Wheel Drive \(AWD\) system. This bulletin involves reprogramming the DTCM with the latest available software.
- [S2308000115](/bulletins/10248566.md), 2024-01-08, Service bulletin: SERVICE BRAKES; ELECTRICAL SYSTEM. Park Assist Module \(PAM\) Erroneously Sets Diagnostic Trouble Code \(DTC\) U1706\-29 Brake System Control Module Signal Invalid After Service Repair
- [2102423](/bulletins/10244441.md), 2023-10-30, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN. Flash: Drivetrain Control Module \(DTCM\) Updates Customers may experience no difference switching between Auto Mode and Sport Mode in the All Wheel Drive \(AWD\) system. This bulletin involves reprogramming the DTCM with the latest available software.
- [S2305000003](/bulletins/10243134.md), 2023-10-02, Service bulletin: FUEL SYSTEM, GASOLINE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). P0258B Electric Vacuum Pump \(EVP\) Performance Diagnostic Trouble Code \(DTC\)
- [9100186](/bulletins/10242707.md), 2023-09-25, Service bulletin: SERVICE BRAKES; ELECTRICAL SYSTEM; SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM. Brake Vacuum Pump For DTC Code P258B. Due to brake vacuum pumps being returned with trouble not found, please follow the proper diagnostics outline in the service library this also includes checking all electrical and vacuum hose connections prior to replacement of the vacuum pump. This will avoid unnecessary repair and potential charge back on the vacuum pump.

JSON: [/v1/bulletins/11001254](/v1/bulletins/11001254)

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