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Service bulletin 05-004-20

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10184474
Published by NHTSA2020-12-21
Manufacturer's number05-004-20
Manufacturer's date2020-11-25
NHTSA componentSERVICE BRAKES; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT

NHTSA's summary

Rear Brake (Moan) Noise This bulletin involves installing a rear brake anti-moan kit. The customer may comment on the following:A low frequency moan or howl noise from the rear brakes, primarily in cold/humid conditions, typically on the first brake stop in forward or reverse, after vehicle has been sitting for lengthy periods of time (cold brakes).

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Brakes, Equipment and accessories

Vehicles listed
RAM 15002019, 2020

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20245032024-09-05. Brakes
24V6530002024-09-05. ELECTRONIC STABILITY CONTROL (ESC):CONTROL MODULE; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
20190502019-02-06. Brakes
19V0670002019-02-05. SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
S25050000032025-12-17. Service bulletin. Diagnostic Trouble Code (DTC) C0050-00-Brake System Hydraulic Leak Set After Recent Repair.
S25230000912025-12-17. Service bulletin. Antilock Brake (ABS) Light On. Intermittent Or Implausible Wheel Speed Sensor Signal Diagnostic Trouble Codes (DTCs)
S1805000006 REV.B2025-11-13. Service bulletin. ESC Light Illuminated. DTC C1252-92 VACUUM PUMP CONTROL CIRCUIT And Or P258B ELECTRONIC VACUUM PUMP PERFORMANCE
1029502025-02-04. Service bulletin. MODULE - ANTI-LOCK BRAKE SYSTEM
1029482025-02-04. Service bulletin. MODULE - ANTI-LOCK BRAKE SYSTEM
S25230000052025-01-21. Service bulletin. "Squeak Noise From Brake Pedal When Pressed And Or Released."
1004182024-10-02. Service bulletin. MODULE - ANTI-LOCK BRAKE SYSTEM
1004212024-10-02. Service bulletin. MODULE - ANTI-LOCK BRAKE SYSTEM
993992024-07-31. Other. MODULE - ANTI-LOCK BRAKE SYSTEM
S238A0000282024-03-18. Service bulletin. Radio Black Screen, Freezing, Reset, Cutting Out Or Inoperative Intermittently