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Gas Milleage for "NON HD" 2500

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GlennRMK Enthusiast

GlennRMK

Posted
Posted

Well, my old room mate had an 02 2500 Extended Cab short box, 4x4, w/3.73s.

 

He had for like 20,000 miles. Best mileage ever was 15 MPG. Average highway was 13-14 MPG @ 75-80 MPH. 11-12 MPG around town.

 

He had a 99 5.3 and 18-20 MPG on the highway and 15-16 MPG around town.

 

And he didn't notice a lot of power difference between the 2. So, he was very dissapointed and traded it in for a 03 Duramax Crew Cab, and now he is back up 17-19 MPG on the highway.

 

I am not a fan of the 6.0 litre. My buddy has an 02 8.1 extended cab long box with 3.73s and get 13-15 MPG on the highway and 10-11 MPG around town. And that has way more power.

 

IMO, go with the 5.3 or 8.1.

dougsster Enthusiast

dougsster

Posted
Posted

I had an 02....exact same truck....Seemed to get about 10-11 around town and 12-13 on the highway doing 80-85....Was never really impressed with the power either. Only had a catback exhaust and 265-75-16 tires.

 

I have an 8.1 with a 4.10 rear diff and seem to get about the same or slightly less.

 

I cant complain though...it was a tough engine just had to high of a power curve. Towing over the grapevine in so cal it would maintain 65 but it had to be in 2nd gear between 3700-4000 rpm....Couldnt stop it though....the 4l80 trans has a really long 1st gear.

 

Enjoy whatever you get...then get something else!

 

Doug

BRUTONMOTORSPORTZ Enthusiast

BRUTONMOTORSPORTZ

Posted
Posted

The best I have gotten out of my 04 2500 Light Duty Crew Cab 4X2 w/3.73 gears is 14.5 mpg. (Highway) I get 10 - 11 mpg around the City. My truck still has less then 6000 miles on it. I hope the more I break it in that number goes up but, who knows. My 02 Camaro Z28 6-speed got about 20 mpg until I hit 10000 miles and it started getting 23 mpg. Time shall tell.

teamjnz Enthusiast

teamjnz

Posted
Posted

I have a 2000 Silverado light duty 4x4, 6.0 liter with 3.73 gears all stock and I get 14MPG at 2000RPM (65 MPH)

 

teamjnz

:seeya:

XTOAK Enthusiast

XTOAK

Posted
Posted

I've got a 2004 Silverado 2500 Crew Cab SB 4x4 (not the HD) with the 6.0, auto tranny, 3.73 rear end, stock, and have almost 7000 miles on the truck. Thus far, the best highway mileage I have gotten is 14 mpg and the worst even in city driving has been 11 mpg. Highway speeds range from 55 mph to 70 mph. Not bad for that heavy of a truck. The highway mileage has been through the pass from Kenai to Anchorage both empty and loaded with dirt bikes.

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