fozzi58
Full Access Member
No - 2wd w/ the cyl deact.Pretty impressive. You've got a 4WD with cylinder deactivation still in play?
The GMT900 and new platform still share the 31 gallon fuel tank. If my recall is correct, my best tank in my 08 Avy (2x4 w/ cyl deac) was about 500 miles (100% highway). I just filled up the new burb with 27.11 gallons and got 509.9 miles from the last fill-up with an average of 19.2 mpg (based on my trip settings). Total mileage for this trip was 70% city/30% highway. I know I had pushed my Avalanche to the point where I would need 29.x gallons to fill the tank so I've easily bested the mileage based on how much I need to fill up, so the new truck is already way better in the fuel economy.
I've reset the trip to do another round. I'd like to know if anyone with a 4x4 would like to try this out for a couple weeks to see how they compare with MPG. I'm driving normally and trying to keep it under 80mph on the highway. Jersey is a bit "hilly" up north but by no means "mountainous" in the area I live.