dug

iTrader: (10)

It looks like around 20mpg is the max with weight of these trucks.

dug

iTrader: (10)

thats pretty impressive with 4k stall. what speed do you have it lockup at?


I had the tuner lock it up at 32mph, which is the same rpm at 40mph with the 3.73 gears

Rhino79

iTrader: (7)

I lock it only in 4th gear actually, and at 50 mph. I have locked it lower and in 3rd but I hate the locking and unlocking in town in traffic, so I only lock it in 4th close to highway speeds. Pre stall and gears I got 19-21 depending on highway mix.

offroadrider12

I think 21mpg mixed is pretty good

slowride454

I got terrible mileage with the completely stock 4.8 w/ 3.23 gears. I now get about 15-16 city and 22-23 on the highway.

outlawz2004

iTrader: (18)

If I baby mine I can get a couple more out of it, or just using non ethanol fuel I get a couple miles better per gallon.

dogger

iTrader: (1)

2000 silverado 4x4 4.8 5spd got 22 mpg
2002 2500 4x4 6.0 5spd gets 14.5 mpg they don't get the same mileage if they do something is wrong BTW both were or are my everyday drivers got uses the same with the same cheap ethenal fuel

dug

iTrader: (10)

did the headers help much?

Maybe its the dbw on my truck. It seems like the idle is set a too high and theres is a delay when letting off the gas. When its cold it sometimes idles to 20-30mph without any foot on the gas. Its annoying.

slowride454

I did the headers, exhaust, CAI and tune with little to no change. I did the drop, gears and UDP and only tuned the speedo calibration later.

silverado1ss89

I got an 08 Rcsb 4.8 2wd.. I get about 12 mpg for the route I drive( mostly street). Straight fwy I get 20 mpg going 80...