Not so much with fuel, but we do have a lot of convertor and copper wiring thefts.

I went with "I have a locking fuel Door- Use Non Locking Gas Cap inside", technically there is no actual lock on my fuel door, but you do have to be able to get inside of the car and hit a button to open it.

I didn't find the "Poll Option" for) "Lives in very rural area where rednecks often shoot at strange noises in yard at night"
The 2005 doesn't seem to be able to be siphoned, I've tried when the wife was gone and my lawntractor ran out of gas. I, like Brian, figure it you put a locking cap on it is going to invite damage you rather trade off for a couple gallons of gas lost.

A friend of mine bought one after a gas thief was active in her area. She got nothing but check engine lights, and eventually gave up on it. Of course, had I known the dealers had model-specific ones, I would have pointed her in that direction.

I don't bother with one, personally. If someone wants to go through the trouble, I'd rather replace $40 of gas than scratched paint, a bent fuel door, a broken filler hose, etc.

i had it too. i didnt want a locking one but the gasket was cracked on my oem one so i was near a pep boys and that was all they had at the time. didnt last long before it was in the garbage

Kinda miss having my locking fuel door. GM deleted that from the GXP for some reason