Service bulletins for the 1991 Hyundai Sonata
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.
11 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Catalytic converter are shown. Show all
| 9401015 | 1995-02-09. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. 1991 CALIFORNIA SPECIFICATION SONATA CATALYTIC CONVERTER EMISSION CAMPAIGN (23). *TW |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.