Do you have the stock messaging app installed, or are you using Hangouts? I don't know about Hangouts as I uninstalled it, but for the stock messaging app there is an option to turn the vibration on in the notification settings of the app. By default it's set to never vibrate. This can be changed to "Only when silent" or "Always".
Noob FAQ Q: Can someone suggest a link I can follow that will walk me through the root process for this phone? A: Simple answer is no. Do your homework. No spoonfeeding here. Check the stickies and the search engine. You'll find it soon enough.
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