Free to me GMC 2500

[Dantheman1540]

Made the 75 mile ride to the beach without any issues. This truck is going to be a great cruiser for trips like this. I need to fix the cruise control and it needs tie-downs in the bed, but it did great! Now for some relaxing beach time.

 

[Dantheman1540]

Well on the trip back it randomly shut off while driving as if it was out of gas. Gauge said 1/8 of a tank left and I was actually heading to a station already. But I had only gone 212miles that tank and when I filled it up after it died it only took 20.8gal. So something is sus with the fuel bucket and I’m not sure why the trucks getting 10mpg that’s a little upsetting for being a 5.7 and the trip being 60-65mph back roads. I would expect that from a BB maybe but for a 5.7 I definitely expected 12-14.

I foresee dropping the tank in the near future. But it did make it the rest of the way home flawlessly and I really am falling in love with it even more!

 

[HotWheelsBurban]

Well on the trip back it randomly shut off while driving as if it was out of gas. Gauge said 1/8 of a tank left and I was actually heading to a station already. But I had only gone 212miles that tank and when I filled it up after it died it only took 20.8gal. So something is sus with the fuel bucket and I’m not sure why the trucks getting 10mpg that’s a little upsetting for being a 5.7 and the trip being 60-65mph back roads. I would expect that from a BB maybe but for a 5.7 I definitely expected 12-14.

I foresee dropping the tank in the near future. But it did make it the rest of the way home flawlessly and I really am falling in love with it even more!

My crew cab is a 5.7 and it routinely gets 9.5-10 mpg in town. We get on the freeway every so often and blow the cobwebs out, but it gets better mileage on highway road trips. 12-14 mpg then.

 

[99xcss4]

you have 4.10s that is not great for mileage but is great for towing hauling pulling pushing and any other truck related thing you can think of you are also a 4x4 more heavy then a 2wd smiles per gallon ftw if my project is able to meat or slightly pas 10 mpg I will be very happy big blocks and big tires with lifts and gears to match drink a lot

 

[Dantheman1540]

Maybe I will expedite the 0411 swap and tune on the mods list. I don’t mind bad MPG best thing I have now gets 16highway, but better is of course always desired.

 

[Caman96]

Maybe I will expedite the 0411 swap and tune on the mods list. I don’t mind bad MPG best thing I have now gets 16highway, but better is of course always desired.

Swap in new o2 sensors.

 

[Dantheman1540]

Swap in new o2 sensors.

I’ve personally never seen an mpg difference after an O2 swap. Are these trucks extra susceptible to that for some reason? Probably will wait till I 0411 swap it just so I can log O2 data and see if something looks wildly off. O2s ain’t cheap any more lol

 

[HotWheelsBurban]

you have 4.10s that is not great for mileage but is great for towing hauling pulling pushing and any other truck related thing you can think of you are also a 4x4 more heavy then a 2wd smiles per gallon ftw if my project is able to meat or slightly pas 10 mpg I will be very happy big blocks and big tires with lifts and gears to match drink a lot

What makes 4.10s drivable is the HD overdrive transmission (4L80E). And a 4x4 has more weight to move in the first place. That said, these are trucks built for work, and they're not not going to get great mileage. If I can get mine to 12-14 in town, and a little bit better on the road, I'll be happy. A 400 is a little bit more aerodynamic than a square body trucks, but the newer ones may be better in that respect. And a camper shell makes a difference too because you take away the airflow dip into the bed.

 

[Caman96]

I’ve personally never seen an mpg difference after an O2 swap. Are these trucks extra susceptible to that for some reason? Probably will wait till I 0411 swap it just so I can log O2 data and see if something looks wildly off. O2s ain’t cheap any more lol

Swapped mine last year and gained 2-3 mpg. Idk what condition yours are in. If they are original and you have over 60-80k on them, I’d personally change them.

 

[Dantheman1540]

Swapped mine last year and gained 2-3 mpg. Idk what condition yours are in. If they are original and you have over 60-80k on them, I’d personally change them.

Now you’re starting to convince me that the manifolds and cats need to go so I can delete the rear 02s and save money only buying 2 new sensors. Long tubes might be added to the list with the 0411 swap lol.