^ No idea. I never drove in ice or snow. I drive on sand.
I doubt it would make much difference. I think that 4WD (not AWD) would really on have an advantage in gettting the vehicle moving or unstuck granted you don't have open differentials. After the vehicle is moving, I don't think it really matters once the vehcle is moving. I'm not talking about rock crawling, mud bogging, or Rubicon type stuff where 4WD is a requirement.
On sand 4WD only helps get the vehicle going. Once it's going my 2WD trucks usually don't get stuck as long as they're moving. The 4WD truck helps out a bit if I'm trying to climb a berm or something and the rear wheels are just digging. But if I have a moving start, even my 2WD trucks can get up or part way up the berm. I don't have too much experience with the 4WD truck. And I'm talking about Class 5 trucks here so it might be different for a SUV. My trucks weigh 11,500lb-15,000 empty and run 110PSI in street tires (the 4WD truck has A/T tires)...so I don't know how much of this applies to your situation.
I don't have much experience off roading with a 2WD pickup truck. I've gotten them stuck before, but once was in a section of my parking lot that I didn't realize was soft sand. The other time it got suck because the driver accidentally got the back wheel into a rut that the stake truck dug. The back wheel fell in the rut and the truck was resting on the leaf spring or frame rail.
The cylinder management system is multi-displacement system. When you're cruising, one bank on the V6 shuts off so your vehicle runs on 3 cylinders to save fuel. Microphones and speakers inside the vehicle generate an inverted waveform to cancel out engine noise inside.