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Service bulletin 0004

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 id610648
Published by NHTSA2000-05-09
Manufacturer's number0004
Manufacturer's date2000-02-03
NHTSA componentENGINE AND ENGINE COOLING:ENGINE

NHTSA's summary

ADVANCE SERVICE INFORMATION REGARDING THE ADDITION OF THE LEAK DETECTION PUMP SYSTEM ON ALL FEDERAL AND CALIFORNIA VEHICLES EQUIPPED WITH GASOLINE ENGINES. OTHER CHANGES INCLUDE THE INTRODUCTION OF THE HIGH OUTPUT 5.9L CUMMINS DIESEL ENGINE PACKAGE AND CHANGES TO THE ELECTRICAL SYSTEM AND THE HEATER AND A/C SYSTEM. *TT

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

Engine

Vehicles listed
DODGE RAM2001

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

Other bulletins for the same vehicles and component
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R2118796A2021-05-03. Service bulletin. Valve Body. These may cause over drive cycling.
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90026882018-06-04. Service bulletin. 68069384A$, R8069384A$, 68086182A$, R8027067A$, RL002012A$ - Gasket, Cylinder Head Cover Before replacing injectors for Diagnostic Trouble Codes P0201, P0202, P0203, P0204, P0205, and/or P0206, please make sure that the wiring loom and/or connector in the valve cover gasket is not the root cause to your concern. In addition, make sure that the wiring attaching nuts are torqued to their proper value.~
072005-10-15. Service bulletin. EMISSIONS RECALL E07-CANISTER PURGE HOSES. THE CANISTER PURGE HOSES ON ABOUT 7,800 OF THE ABOVE VEHICLES MAY DEVELOP CRACKS OVER TIME AND RELEASE EVAPORATIVE HYDROCARBON (HC) WHICH COULD EXCEED FEDERAL EMISSION STANDARDS. *SC
09009042004-05-03. Service bulletin. VACUUM PUMP SERVICE. *TT
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18030032003-10-23. Service bulletin. GENERIC CUMMINS ENGINE CONTROL MODULE (PCM) PROCEDURE. *TT
09008022003-02-22. Service bulletin. ENGINE KNOCK OR RATTLE SOUND WHEN CLIMBING A LONG GRADE AND TOWING A HEAVY TRAILER. *TT
18021022002-10-30. Service bulletin. SOME ENGINES MAY EXHIBIT A HESITATION UPON ACCELERATION AFTER A COLD START UP. *TT