Pull. Twist a flat screwdriver and it should pop off. Put a rag over it to prevent it's visiting the next county. Be sure you get put the old o-ring.  You won't lose much coolant if the engine's cold and you're fairly quick. 

Karl Wolz
Sent from my electronic umbilicus

> On Dec 29, 2013, at 11:38 AM, JRodgers <jrodgers113@GMAIL.COM> wrote:
> 
> I need to release the Temp II sensor.
> 
> Question: Does one push the release clip - or pull the release clip - to
> unlock and free the connector.
> 
> Having a problem getting it loose and it's hard to see the action from
> on top.
> 
> Getting underneath to look isn't an option for the time being. It's been
> raining and water is running under the van.
> 
> Thanks,
> 
> John