Service bulletins for the 1991 Jeep Comanche
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.
10 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Engine are shown. Show all
| 070397 | 2000-01-07. Service bulletin. ENGINE AND ENGINE COOLING. CONCERNS WITH ENGINE COOLANT USAGE. *NLM |
|---|---|
| 110798 | 1999-02-02. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. OUTER EXHAUST MANIFOLD STUDS MAY FATIGUE/BREAK. *AK |
| 110798 | 1998-10-26. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. THE OUTER EXHAUST MANIFOLD STUDS MAY FATIGUE AND BREAK. *YC |
| 070397 | 1997-11-13. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. VARIOUS CAR OWNER'S HAVE EXPRESSED INTEREST IN USING ENGINE COOLANTS MADE WITH PROPYLENE GLYCOL INSTEAD OF ETHYLENE GLYCOL. *YC |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.