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5.3 Milage

Houlihan17

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Houlihan17 Enthusiast

Houlihan17

Posted
Posted

Hey so i curently am looking at a 04 z71 ext cab and a 05 z71 ext cab both have the 5.3 i was just wondering how many km's or miles you get from a full tank till it hits the gas light this is whats holding me back this will be my first fullsize pickup and i am worried about how much im gonna be spending on fuel please list mods and tire size so i can get an average thanks for your help

LTZ71 Enthusiast

LTZ71

Posted
Posted
Hey so i curently am looking at a 04 z71 ext cab and a 05 z71 ext cab both have the 5.3 i was just wondering how many km's or miles you get from a full tank till it hits the gas light this is whats holding me back this will be my first fullsize pickup and i am worried about how much im gonna be spending on fuel please list mods and tire size so i can get an average thanks for your help

 

 

I have an 04 Z71. I get 15 around town. A tank yields about 300 miles before the idiot light comes on.

 

Hope that helps...LT

ShoddyHog Enthusiast

ShoddyHog

Posted
Posted

I get 17 mpg and can go almost 500 miles before fill up. ECLB FTW :D It took $70 to fill yesterday with 87 octane.

 

5.3 with 3.73 gears and Active Fuel Manglement disabled.

 

Gerry

jblakeney Senior Enthusiast

jblakeney

Posted
Posted

99 GMC 2wd 5.3 3.73. 13 city 15 hwy... Idiot light is around 3 gallons left. 26-3=23*15=345ish I have only hit the idiot light about 9 times in 10yrs..... However if you get it out on the highway after filling up it gets about 16-17 if you don't make stops. So 391 might be possible.

 

Jbo

ShoddyHog Enthusiast

ShoddyHog

Posted
Posted
Shoddyhog

 

 

Do you have the 34g tank?

 

Yes.

 

I guess I should say I get between 16 and 17. I could do better out on the road, but when it takes 450+ miles to drain the tank, I eventually end up doing something that'll kill the overall mileage for the tank. I do believe that 17 is what I'll be seeing most of the time. Still, 16-17 the way I drive is pretty damn good.

 

Gerry

ujtruck Enthusiast

ujtruck

Posted
Posted
Hey so i curently am looking at a 04 z71 ext cab and a 05 z71 ext cab both have the 5.3 i was just wondering how many km's or miles you get from a full tank till it hits the gas light this is whats holding me back this will be my first fullsize pickup and i am worried about how much im gonna be spending on fuel please list mods and tire size so i can get an average thanks for your help

 

 

you can add HHO Dry Cell to increase MPG http://www.fuelsaver-mpg.com/store/index.p...=page&id=32

 

I am planning to add HHO to my truck.

 

anyone running HHO ?

 

please post your results

 

sorry about hijacking the thread :D

grayghost7 Enthusiast

grayghost7

Posted
Posted

2005 RCSB Z71....gets 17.7 average [450 miles] with the hammer down and the air blarin'....Sure beats 9 mpg on the old 70 and I got comforts!!

 

PS....bone stock

uh6tdrvr Enthusiast

uh6tdrvr

Posted
Posted
Hey so i curently am looking at a 04 z71 ext cab and a 05 z71 ext cab both have the 5.3 i was just wondering how many km's or miles you get from a full tank till it hits the gas light this is whats holding me back this will be my first fullsize pickup and i am worried about how much im gonna be spending on fuel please list mods and tire size so i can get an average thanks for your help

 

 

you can add HHO Dry Cell to increase MPG http://www.fuelsaver-mpg.com/store/index.p...=page&id=32

 

I am planning to add HHO to my truck.

 

anyone running HHO ?

 

please post your results

 

sorry about hijacking the thread :thumbs:

 

 

 

:smash:

http://www.popularmechanics.com/automotive...932.html?page=1

Popular Mech. tested these so called "fuel savers" the results are in the article

WilliamBos Senior Enthusiast

WilliamBos

Posted
Posted

I get a minimum of 375miles/600kms before I fill up. I NEVER let the idiot light come on because the fuel pump is in the tank, and the gas keeps the fuel pump cool.

 

BTW, the 04 is the last year of rear disc brakes, and I love them.

Indy Enthusiast

Indy

Posted
Posted
Hey so i curently am looking at a 04 z71 ext cab and a 05 z71 ext cab both have the 5.3 i was just wondering how many km's or miles you get from a full tank till it hits the gas light this is whats holding me back this will be my first fullsize pickup and i am worried about how much im gonna be spending on fuel please list mods and tire size so i can get an average thanks for your help

 

My last 4 tanks averaged 21-23 mpg (Canadian gallons). Mostly highway and back roads. 245/75/16 Revos, K&N FIPK, Flowmaster 40 series, Gibson headers, Flex-a-lite fans and Waitforme computer tune for 91/93 octane.

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