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Service bulletins for the 1998 Dodge Ram

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.

167 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Exhaust and emissions are shown. Show all

Bulletins, newest first
11006052006-01-27. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. ILLUMINATED MIL AS THE RESULT OF A DIAGNOSTIC TROUBLE CODE (DTC) P0420 - CATALYST EFFICIENCY, OR MAY HAVE FAILED A CALIFORNIA SMOG OR STATE I/M TEST BUT WITHOUT AN ILLUMINATED MIL, OR A RATTLING SOUND FROM THE UNDERSIDE OF THE VEHICLE. CATALYTIC CONVERTER EXTENDED WARRANTY TO REPLACE THE CATALYTIC CONVERTER. *TT
25004012001-07-11. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. SUBJECT REGARDING ADDITIONAL DIAGNOSTIC FOR DIAGNOSTIC TROUBLE CODES CAUSED BY AN EVAPORATIVE SYSTEM LEAK. *TT
8311999-11-03. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. EMISSIONS RECALL TO REPROGRAM YOUR VEHICLE'S POWERTRAIN CONTROL MODULE. *TT
8171999-08-17. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. EMISSIONS RECALL NO. 817 REGARDING THE POWERTRAIN CONTROL MODULE NOT ILLUMINATING THE MAINTENANCE REQUIRED LIGHT AS SPECIFIED BY FEDERAL REGULATIONS. *TT
7941999-05-14. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. CALIFORNIA EMISSIONS RECALL -- REPROGRAM POWERTRAIN CONTROL MODULE. *TT
7601999-02-26. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. NOX EMISSION LEVELS MAY EXCEEDCALIFORNIA AIR RESOURCES BOARD (CARB) EMISSION STANDARDS. TO CORRECT THIS CONDITION,PCV AND BRAKE BOOSTER HOSES MUST BE REPLACED AND REROUTED. *AK
2502981999-01-20. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. SUBJECT REGARDING I/M ( INSPECTION MAINTENANCE ) TESTING - OBD II "CARB" READINESS MONITOR INFORMATION. *YC
8001/80021999-01-06. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. SUBJECT PERTAINING TO REPROGRAMING ENGINE CONTROL MODULE FOR NOX EMISSIONS. *AK
1108981998-11-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. A NEW KIT HAS BEEN RELEASED THAT WILL ALLOW TECHNICIANS TO REPAIR TURBOCHARGERS WITH FAILED WASTEGATE ACTUATORS. *AK
1806981998-05-11. Service bulletin. VEHICLE SPEED CONTROL:ACCELERATOR PEDAL; VEHICLE SPEED CONTROL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE AND ENGINE COOLING:ENGINE; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM. COMPLAINTS OF HARD OR NO START CONDITONS. *YC

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.