* An exclamation point (!) inside a gear or a gear with a circle around it: This is a common representation for general transmission issues.
* A gear with a warning light: This often indicates a problem requiring immediate attention.
* The check engine light (often an engine icon) flashing: While not specifically a transmission light, a *flashing* check engine light frequently points to a serious transmission problem that could cause immediate damage if ignored. A *steady* check engine light might indicate a transmission-related problem, but it could also be something else.
To be certain: Consult your 2000 Dodge Caravan's owner's manual. The manual will have a diagram showing all the dashboard warning lights and their meanings.