I have looked twice - I am embarassed to ask - where is the oil filter under there?

I could be wrong. My wife drives a 05 Chevy Equinox and I read it somewhere that GM starts putting the fuel filter inside the fuel pump/tank assembly. Your 05 GP may or may not have an external fuel filter...

It's on the passenger side of the car, toward the belt drive side of the engine, between the motor and the firewall.

It's on the passenger side of the car, toward the belt drive side of the engine, between the motor and the firewall.

Thanks for posting this answer. I have a 2002 but I couldn't find mine either until after I read this. More specifically, it's near the wheelwell for the right front tire. Once you find it, it's very easy to access with the car up on stands.