I bought a 32 mm socket from Sears when I started doing the oil changes on my daughter's '05 Cobalt.So,of course,when I went to use said socket on my HHR,it wouldn't fit because of interference with the re-shaped intake manifold.So I had to go to Advanced Auto Parts and buy the one that they sell.

 

I checked with Lisle who gave the following reply as to who carries these:

"Carquest, Parts Plus, or O'Reilly auto parts stores"

I checked a local Carquest who at first didn't know what I was talking about then looked it up on their computer and had it in their shop in a couple of hours. Cost $10, fits perfect.

Jim