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
Only bulletins with component: Transmission control module are shown. Show all
| 030730052A | 2004-03-02. 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 |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.