WenmarOpen by Wenmar Pro

Service bulletin 050498

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 id601570
Published by NHTSA1998-08-10
Manufacturer's number050498
Manufacturer's date1998-06-12
NHTSA componentSERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DIFFERENTIAL PROPORTIONAL VALVE

NHTSA's summary

VEHICLES LISTED ON THIS BULLETIN ARE EQIPPED WITH REAR HEIGHT SENSING PROPORTIONING VALVE THAT ADJUST BRAKE PRESSURE TO THE REAR BRAKES BASED UPON DISTANCE BETWEEN FRAME AND REAR AXLE. *AK

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Brakes

Vehicles listed
DODGE RAM1997, 1998, 1999

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

Recalls for the same vehicles and component
04V1850002004-04-12. SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
19980741998-04-20. Brakes
98V0750001998-04-08. SERVICE BRAKES, AIR:DISC:ROTOR

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
0507972000-01-07. Service bulletin. CONCERNS WITH PARK BRAKE RELEASE HANDLE DOES NOT FULLY RETURN TO REST POSITION. *NLM
0505972000-01-07. Service bulletin. CONCERNS WITH ACCELERATED BRAKE LINING WEAR, FRONT VERSUS REAR. *NLM
0506991999-08-11. Service bulletin. INFORMATION REGARDING ACCELERATED BRAKE LINING WEAR, FRONT VERSUS REAR. *TT
0507991999-08-11. Service bulletin. BRIEF INFORMATION ON THE USE OF ASBESTOS FIBER BRAKE LININGS. *TT
0507971998-04-07. Service bulletin. CONDITION WITH PARK BRAKE RELEASE HANDLE DOES NOT FULLY RETURN TO REST POSITION. *YC
0504971998-04-07. Service bulletin. FRONT BRAKE LINING WEAR PREMATURELY WHEN COMPARED TO THE WEAR EXPERIENCED ON THE REAR BRAKE LININGS. *YC
0503971997-07-17. Service bulletin. BRAKES - CHASSIS DYNAMICS DIAGNOSIS. *TW