Yes, I'm asking the the infamous question, what's your MPG? I did a search on here and the web and only found GMC stats. I'm looking for realtime driving MPG. Thanks.

-Spade

 

well I have a 6.2 fully bolt on plus cam on a single cab, on the long run it will burn a lot less gasoline than a stock 5.3 (I had 5.3 before) but on city driving, mmm 3 times more....

 

about 16

 

My wifes Yukon XL Denali AWD gets 15-16 in town and 19-21 on the highway, it is self tuned with HPtuners, the highway mileage varries that much depending on the winds thet effect it greatly. all stock except for tune and the GMPP CAI kit.
See pics:

 

i get around 13-15 in the city with pushin on the throttle every once in awhile.
but highway i get 20-21 mpg 75mph cruise control..
if i dont step on it i can commute all week long to work with 1/2 a tank 40 miles round trip per day (normal driving conditions). usually never the case so i waste almost 3/4 tank lol. 6l80 helps alot though for the mpg's

 

80e's give better MPG?

 

the 6 speed has an extra overdrive gear, so it lowers ur rpms. so it will give u better mpg than a 4spd.

 

I get 14.5 around town and between 12 and 18 on highway depending on my cruising speed. Compared to my 01 Tahoe 5.3L, I get 1 MPG better with an extra 100 or so ponnies.

 

My 04 RCSB Z71 with 224 cam full bolt-on 6.2 with Yank 3000tt gets 16-17 on the hwy.