My 4 year old pulled this off today, anyone know cheapest online vendor I could get it from or would the GM dealership be close in price? any idea what it would cost or is called? thanks guys

 

super glue.....the good stuff by loctite......$3.99

 

I'm pretty sure you have to buy the whole handle. Not 100% on that, but that's the only way I've seen them come.

 

One of mine broke off last fall.
I got a replacement off E-bay for about $6.00 + shipping for a black one.
Of course you have chrome, so it costs more than 2x the cost of black.
06 10 Hummer H3 Front Rear Door or Rear Lift Gate Chrome Handle End Cap New | eBay

Be very careful removing and replacing the bolt that holds this on. DO NOT let it drop inside the door.

 

I got a chrome one off of Ebay last year. Other than the screw being stripped it was easy to change. You do not have to take the door panel off.

 

Yeah, took me less than 2 minutes to change it.

There's a plastic plug on the side of the door near the handle. Remove that plug and you will see the hex head bolt that holds that piece on.
Carefully remove that bolt (there's probably a small piece of the original handle part still there) and then install the new part using that bolt.

DO NOT drop that bolt into the door!!!!

Replace the plastic plug and you are all set.