ChevyMgr

That is usually not a sweet deal....sorry couldn't resist.

ivtech

No, but it is a stickey situation.

mudd274

these do work but make sure you put it back on good or it will set off an alarm on dash. Stant 11511 doesnt work.

Old Lar

Back during the gas crisis in the 70s, gas siphoning was quite common and gas cap locks were common as well as locking gas doors. My cousin,in his youth, did some of that until he siphoned some diesel fuel for his car...he didn't get too far.

Lone Ranger

I'm not into lowering but I have to say that would be one advantage of lowering your HHR-- keep people from being able to get underneath it to get to the tank.

To the orig poster, its also not always about keeping things from coming out of your tank but about keeping things (sugar, etc as mentioned) from going in, from vandals.

I have one of the CST brand locking caps on my mine, got it @ Autozone, CST #5903. The Stant brand ones are too tall to allow the fuel door to close.

tim_tenn

And ...

So true. Back in '92, my ex bought a used Cadillac Cimarron (I know, I know. Let's not go there.). Someone had sugared the gas, so the owner sold it cheap to get rid of it. A mechanic friend said he could remedy this -- and took the gas tank off and replaced it, then power flushed clean gasoline and injector cleaner through the engine. Too late, the damage was done, and the Cimarron died an extremely painful death just a week or so later. Can't tell you how badly this car ran until it finally died.

I think the decision has now been made for me ... a locking gas cap it is.

Cardwiz428

I went to checkers auto parts and they sold locking gas caps for Lts only. I found out the the cap flange is about a 1/2" thicker and won't fit an LS. Does this make sense to anyone and can a LS person get a locking gas cap.

Daverb

guess I am lucky to have a garage to park at night. I thought of the locking gas cap for when I am out about town or out of town. But then I rather not have a hole put into my gas tank. Rather just replace the gas than the whole tank, possible fuel pump and gas. Of course you could supply Billy Mays with some money and buy some Mighty Putty LOL

courthousedeb

Just a word of caution to those considering the CST cap. Be sure you get it on right or it will set off your CEL (check engine light)...it did mine when I had one on there. There are several solutions...one is recycling the key like 50 times I was told or driving it 50 miles or thereabouts (and at the price of gas, that can get costly)

The other is to disconnect the battery, let the car sit for a while and then reconnect it which is much easier. However, please remember not to completely close the rear hatch or you will be climbing thru the car on hands and knees to reconnect the battery. Been there...done that.

monster5601

Is it true for the HHRs, do they have a screen in the filler?

Locks only keep honest people honest. I just want to discourage the neighbor kids from "borrowing" my fuel.