How much fuel do you take?

[swathdiver]

Communism happened. They are fascinated with murderous dictators and think that they can do it better than them and know better how to manage your affairs instead of just leaving us alone.

 

[Nashoba]

My '08 holds 26 gallons. When the "miles left" on the computer show 50 miles, the fillup takes 23+ gallons. The analog gauge shows about 1/8 th tank.

 

[ahunn]

My 07 takes 23 gallons at E. Maybe slightly more if I drive longer.

 

[Yoslick]

31 gal on my Yukon XL 05 and 04, gauges seem to be spot on.

 

[BigDaddy13440]

31 gal on my Yukon XL 05 and 04, gauges seem to be spot on.

When my idiot light comes on, I know I've got enough fuel left for about 30 miles. I've only pushed it once, and got about 18 miles before it started sputtering. Thank GOD the trip into the nearest town was about 4 miles, and all downhill. Took 31.6 gallons, topping it off (I know, I know...).

When going about 8-10 miles after the light comes on, I'm usually putting about 29-29.5 gallons in, rounding up to the next dollar (old habits die hard, always used to pay in cash). My gauge doesn't even start to register until I've gone about 40 miles, then drops quickly to about 3/8 (about 200 miles in), then slows down until the light comes on (at about 310 miles).

Currently only getting about an adjusted 12 mpg (34.1" tires vs the stock 31.6"), with my knock sensors needing replacing (already have them and the harness, being done next Wednesday).

 

[Dusty_GMT800]

Never even had my idiot light come on haha, but I've noticed even at under 1/4 tank I take 17 gallons, fuel gauge isn't that accurate I guess.

 

[swathdiver]

Currently only getting about an adjusted 12 mpg (34.1" tires vs the stock 31.6"), with my knock sensors needing replacing (already have them and the harness, being done next Wednesday).

You still recovering or going to tackle that project?

 

[BigDaddy13440]

You still recovering or going to tackle that project?

Have everything necessary, but I don't have a heated garage to work in. My cousin is the manager at a Goodyear shop, he said it'll be 2 1/2 - 3 hours of labor. I get the "friends and family rate", will probably run from $150 - $250. Was going to have it done yesterday, but their lead tech was on vacation, coming back on Tuesday.

Plan on having it tuned once the weather changes, probably April or May.

 

[swathdiver]

Good deal, save that kind of work for the youngsters! When I get rid of AFM sometime this year, I'm figuring on hiring a guy to do the grunt work to pull the motor for me and I'll work on it on the stand. Trying to do all that in the engine bay would put me in the hospital!

 

[rockola1971]

I can tell you that running a 03 Tahoe 5.3L until it literally dies from tank on empty that it takes more than a gallon to get it started gain. I put in a second gallon and it fired right up.

Our fuel level sensors are NOT linear(But they are close enough). Its actually a combination of the variable resistor in the tank attached to the float along with the low voltage fed to it from the PCM that causes the linearity to not be perfect. The PCM has a resistor within it that knocks down a voltage level in the PCM for that circuit to below 5vdc. Its a weird value that I cant remember off the top of my head. So that resistor is in series with the variable resistor in the tank. The feedback voltage is then sent to your Fuel Gauge in your IC from your fuel level sensor in the tank. The stepper motor responds accordingly. I could get much more specific and technical but there are some good vids on youtube that do this.