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Service bulletins for the 2004 Saturn Ion

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.

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

By type

By component

By trouble code

Bulletins, newest first
0308420112004-03-04. Service bulletin. ELECTRICAL SYSTEM:WIRING. SERVICE MANUAL UPDATE FOR HEADLAMP WIRING HARNESS REPLACEMENT. *TT
0407300052004-03-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. HISS/CHIRP NOISE IN PARK OR NEUTRAL. *MN
030730052A2004-03-02. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN:AUTOMATIC TRANSMISSION. ENGINE FLARE DURING 2-3 SHIFT, MOST NOTICEABLE DURING LIGHT TO MODERATE ACCELERATION. THE CONDITION MAY BE CAUSED BY AERATION OF TRANSAXLE FLUID, RESULTING IN A DELAYED APPLY OF 3RD CLUTCH. CORPORATE BULLETIN NUMBER 03-07-30-052 *MN
015922004-02-27. Service bulletin. ELECTRICAL SYSTEM. 2003-2004 GENERATION 5 ONSTAR STEERING WHEEL CONTROL FUNCTION EXPLANATION. SIT BULLETIN 1416474. *TT
020235008A2004-02-19. Service bulletin. STEERING:COLUMN. FLUID DRIPPING ON DRIVER'S FLOORMAT. *PH
0308640392004-02-19. Service bulletin. STRUCTURE:BODY:DOOR. WATER ENTERS PASSENGER COMPARTMENT, CREAKING NOISE FROM DOOR WHILE DRIVING AND/OR REAR DOOR HEADER SEAL PULLS AWAY FROM DOOR. *PH
030730023A2004-02-19. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. VEHICLE DOES NOT SHIFT OR MOVE AFTER RUNNING FOR A PERIOD OF TIME AND/OR CHECK ENGINE LIGHT IS ON AND DTC P0741 IS SET. *PH *SC
0101042004-02-12. Service bulletin. ELECTRICAL SYSTEM. SPEEDOMETER FLUCTUATION. *TT
0305240012004-02-11. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM:WHEEL CYLINDERS. SERVICE INFORMATION REGARDING SATURN REAR DRUM WHEEL CYLINDER INSPECTIONS. *TT UPDATE. *TT
0308440212004-02-10. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. POOR OR LOSS OF FM RADIO RECEPTION. *TT
0307300492004-01-05. Service bulletin. STRUCTURE. SPEEDOMETER FLUCTUATION. *TT
0301380202003-12-24. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. AIR CONDITIONING (A/C) CONDENSATION LEAKING ONTO THE VEHICLE FLOOR DURING TIMES OF A/C USAGE. *TT THIS BULLETIN REPLACES 03-01-38-020 DATED 11/01/2003. *TT
0300900042003-12-24. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. OWNER MANUAL UPDATE REGARDING FILTER CHANGE TO THE AUTOMATIC AND VTI TRANSAXLES. *TT
0307300522003-12-17. Service bulletin. POWER TRAIN. ENGINE FLARE DURING 2-3 SHIFT, MOST NOTICEABLE DURING LIGHT TO MODERATE ACCELERATION. *TT UPDATED *EH
0307300512003-12-16. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. LOW SPEED COAST GRINDING NOISE AND/OR HESITATION AT VEHICLE LAUNCH - TECHNICAL SERVICE BULLETIN. *TT TO INCLUDE 2005 SATURN VUE. *EH
0300890252003-12-05. Service bulletin. UNKNOWN OR OTHER. CLARIFICATION OF LABOR CODES USED FOR REPROGRAMMING VEHICLE CONTROLLERS. VARIOUS MODELS INCLUDING THE 2004 L-SERIES. *TT
0300900032003-11-10. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. OIL FILTER CAP ASSEMBLY AND OIL FILTER ELEMENT DESIGN CHANGE. *TT
0307300482003-11-07. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. SERVICE INFORMATION REGARDING TRANSAXLE POOR PERFORMANCE AFTER CASE COVER REPLACEMENT, DIAGNOSTIC TROUBLE CODE P1882 SET. *TT
0300890322003-11-07. Service bulletin. UNKNOWN OR OTHER. RECREATIONAL AND DISABLED VEHICLE TOWING INFORMATION. *TT
030089033A2003-11-07. Service bulletin. UNKNOWN OR OTHER. TRAILER, RECREATIONAL AND DISABLED VEHICLE TOWING INFORMATION. *TT *SC
0308520062003-11-06. Service bulletin. EQUIPMENT. INSTALLATION OF REMOTE KEYLESS ENTRY (RKE) TO ION2 VEHICLES. *TT
0308440172003-10-24. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. CHANGES TO THE AM/FM STEREO AND AUDIO DISC PLAYER RADIO ON-BOARD DIAGNOSTIC MODES AND CD LOAD OPERATION. *TT
04E012003-10-22. Service bulletin. ELECTRICAL SYSTEM. SPARK PLUG INSPECT/REPLACE - PRODUCT EMISSION RECALL. *TT
030139011A2003-10-22. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. WATER LEAKS INTO PASSENGER COMPARTMENT WITH VEHICLE IN INCLINE/UPHILL POSITION. *TT THIS BULLETIN REPLACED PREVIOUS VERSION DATED 08-01-03. *TT
0308420092003-10-07. Service bulletin. EXTERIOR LIGHTING. ONE OR BOTH DAYTIME RUNNING LAMPS (DRL) ARE INOPERATIVE, DIAGNOSTIC TROUBLE CODE (DTC) B3948 AND/OR B3949 MAY BE SET. *TT ERRATIC FRONT TURN SIGNAL OPERATION WHEN USING A CELL PHONE CHARGER IN EITHER ACCESSORY POWER OUTLET. *TT

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