Ram 3500 using to much fuel

[Hdram3500]

I have a 2020 ram 3500 I took it to the dealer and had the fuel pump recall done and now my truck uses twice the fuel and def is anyone else having this problem

 

[H3LZSN1P3R]

I have a 2020 ram 3500 I took it to the dealer and had the fuel pump recall done and now my truck uses twice the fuel and def is anyone else having this problem

There is clearly an issue, have you talked to the dealer?

 

[AH64ID]

I would be calling the dealer and seeing if they can reflash the truck, and verify that they used the correct software. I’ve heard of one guy getting the wrong software, SO vs HO.

 

[Hdram3500]

Ok I will try that thanks

 

[Hdram3500]

There is clearly an issue, have you talked to the dealer?

Yes they keep saying everything is good.
They said they reflashed the computer

 

[CdnHO]

Just what are you getting for fuel mileage unloaded? Hand calculated. Also what engine and rear axle do you have? SRW or dually?

 

[Hdram3500]

Just what are you getting for fuel mileage unloaded? Hand calculated. Also what engine and rear axle do you have? SRW or dually?

I have a drw unloaded 10 mpg and pulling my skid steer 6.8 mpg

 

[CdnHO]

I get around 14 driving daily around on mostly highway. On the highway I get around 17.5 running around 65mph single trip. Pulling my 22K fiver I get 9.5, again running just over 60 mph. Hand calculated. 4.10 axle. Depending on your speed your skid steer is not very aerodynamic. But, yeah, your mileage sounds low. Hopefully a reflash is the answer.