There must be 3 or 4 more obscure ways to tell. Why isn't looking at the VIN good enough?

 

So.... Have you gone to the HHR and re-read the Vin number @ the driver side of the lower windshield again to verify ??.

Not sure why you would trust Car Fax when you could look for yourself.

I would guess you have a 2.2L ... But for Piece of mind, be sure to look at your exhaust tip as well.

Silverfox

 

For a car that's around 10 years old I wouldn't count on all of them having the original exhaust system and tip...

 

Good Point Grey,

He also does not say how many miles which could be a clue as to an exhaust replacement.

If the window Vin and the Glove box vin are the same then that should be the correct info either place.
I see LE8 on his Glove box picture..... It's a 2.2L

Silverfox