2022 AT4 1500 poor towing mileage, anyone else?

[MikeGSki]

It was just the computer calculated mileage. I topped the truck off before the trip & set trip meter 2 & monitor it. I need to actually hand calculate it on my next tow to verify.

Keep in mind if you use the odometer the mpg will match you computer. You’ll have to travel a route that you know the mileage from point A to B. Your truck is only calculating the miles it would travel with stock sized tires. Easiest way I’ve found is to get a gps and compare it to your speedometer to find out the percentage increase. IE if you drive for an hour with the speedo reading 60mph but gps says 65, and say you burn 4gal. The computer will say you got 15mph because it thinks you only traveled 60 miles but in reality you drove 65 putting you at 16.25mpg. My stock 2022 AT4 1500 6.2l has gotten 21mpg at 60ish mph and 18 to 19mph around 70ish mph (not towing of course, I run 93 octane but highly doubt that would make that significant of a difference). With the number your saying sounds like something might be wrong bud.

 

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[MikeGSki]

I bought it for the 6.2 as well but my Duramax had 620 HP & around 1300 FTLB of torque so my 6.2 seems like a big turd LOL!

Definitely not a turd lol

When I get back from WV, I’ll run it against my Procharged 2011 5.3l. It’s running 13psi now. The 6.2l with the 10-speed is an awesome platform for a 1500. Granted I’m thinking about ordering a ‘22 2500 diesel AT4 just to delete it. I’ve played with a lot of gas trucks and looking into trying out a diesel. Here are two videos of when it was at 10psi. I might pull the Procharger off and put it on the 6.2l lol

 

[Edge]

Keep in mind if you use the odometer the mpg will match you computer. You’ll have to travel a route that you know the mileage from point A to B. Your truck is only calculating the miles it would travel with stock sized tires. Easiest way I’ve found is to get a gps and compare it to your speedometer to find out the percentage increase. IE if you drive for an hour with the speedo reading 60mph but gps says 65, and say you burn 4gal. The computer will say you got 15mph because it thinks you only traveled 60 miles but in reality you drove 65 putting you at 16.25mpg. My stock 2022 AT4 1500 6.2l has gotten 21mpg at 60ish mph and 18 to 19mph around 70ish mph (not towing of course, I run 93 octane but highly doubt that would make that significant of a difference). With the number your saying sounds like something might be wrong bud.

I've recalibrated my computer to match the new tire size with the Pulsar LT so the computer is correct. I've verified it with a GPS. On my next fill up I'm going to hand calc the mileage. The tires I switched to are the Toyo open country ATs & they are only 1/2" bigger so not much difference there. 93 is hard to find by me so I have been running 91 in it.

 

[MikeGSki]

I've recalibrated my computer to match the new tire size with the Pulsar LT so the computer is correct. I've verified it with a GPS. On my next fill up I'm going to hand calc the mileage. The tires I switched to are the Toyo open country ATs & they are only 1/2" bigger so not much difference there. 93 is hard to find by me so I have been running 91 in it.

I gotcha, I wonder if the computer isn’t dropping cylinders. I had heard they might not install AFM on some truck because of the chip shortage. Might want to look into that.

 

[Edge]

I gotcha, I wonder if the computer isn’t dropping cylinders. I had heard they might not install AFM on some truck because of the chip shortage. Might want to look into th

With the Pulsar LT I can turn the AFM on/off which I've done it both ways without any noticeable difference. When I take the truck in for the first oil change I'm going to make them check it out.

 

[Duramaximus]

So I have a 2022 AT4 1500 & while towing my all aluminum 16x8 V-nose enclosed trailer at around 70 to 75 mph on fairly flat roads I'm only getting 6.9 to 7.5 miles per gallon! none towing I'm only getting 13. The truck only has 2600 miles, a leveling, SBD cold air, magna flow muffler & the tires went up in size by only 1/2" (from the stock 20" 33s to 20" 33.5s). I have re-adjusted the the speedo for the new tire size. I feel the mileage is complete crap but the rest of the truck I love. Coming from my old 2005 Duramax which I could pull the same load at 80 mph & get 12 mile per gallon which doesn't help my feelings any. I know this is not comparing apples to apples but that is what I've been driving since 2006 & I'm use to. Any insight would be helpful & if the mileage is this poor towing I may go back to a diesel. Also I do not tow all the time but randomly & it's for snowmobiling & or motocross.

What an odd post...

So, your upset because your 6.2L gasser fuel mileage sucks when driving or towing?

What exactly was your fuel mileage expectation going from diesel to a V8 gas engine and expecting it to get better fuel mileage.

I'm not understanding why you're disappointed.

It's like purchasing a Honda Civic and then being upset that you can't fit 8 people in the car.

 

[Edge]

What an odd post...

So, your upset because your 6.2L gasser fuel mileage sucks when driving or towing?

What exactly was your fuel mileage expectation going from diesel to a V8 gas engine and expecting it to get better fuel mileage.

I'm not understanding why you're disappointed.

It's like purchasing a Honda Civic and then being upset that you can't fit 8 people in the car.

I know the mileage wouldn't be as good as my diesel & or do anything as well as the diesel did. I was concerned because the mileage is all around poor compared to what others were getting with the same truck & it seemed lower than what I thought it was.

 

[Lasllc]

I suspect those 35’s aren’t street tires or maybe even A/T’s . If that’s the case that’s a lot of extra friction at those speeds. Goodyear Endurance on the trailer will help a lot esp if its a twin axel.
R

 

[Kevpak24]

So I have a 2022 AT4 1500 & while towing my all aluminum 16x8 V-nose enclosed trailer at around 70 to 75 mph on fairly flat roads I'm only getting 6.9 to 7.5 miles per gallon! none towing I'm only getting 13. The truck only has 2600 miles, a leveling, SBD cold air, magna flow muffler & the tires went up in size by only 1/2" (from the stock 20" 33s to 20" 33.5s). I have re-adjusted the the speedo for the new tire size. I feel the mileage is complete crap but the rest of the truck I love. Coming from my old 2005 Duramax which I could pull the same load at 80 mph & get 12 mile per gallon which doesn't help my feelings any. I know this is not comparing apples to apples but that is what I've been driving since 2006 & I'm use to. Any insight would be helpful & if the mileage is this poor towing I may go back to a diesel. Also I do not tow all the time but randomly & it's for snowmobiling & or motocross.

I pulled a 24' Enclosed Trailer empty last week and only got 7mpg (175 mile trip). Dropped it off and drove home and got 19mpg. 6.2L with 4k miles

 

[Oldschool]

I pulled a 24' Enclosed Trailer empty last week and only got 7mpg (175 mile trip). Dropped it off and drove home and got 19mpg. 6.2L with 4k miles

Go back to the diesel! Gassers are gassers ! I miss my diesel also but I do like the 20+ I’m getting with my 4!

 

[Oldschool]

Go back to the diesel! Gassers are gassers ! I miss my diesel also but I do like the 20+ I’m getting with my 4!

Not towing lol

 

[James III]

I have 12k on my ‘22 with 6.2. Bone stock, trailering package.

I have gotten as low as 12 mpg towing 8,000 lbs and 20 on a 1,500 mile non-towing highway trip last week. Overall average of 17 so far. That is with a lot of idling and driving in the woods.

If you put your foot in the that 6.2 at all it gets thirsty. Keep it around 1,500 rpm and it’s pretty efficient for such a big 1/2 ton with M/Ts.

 

[Oldschool]

They do pretty good on mpg. My 21 has the same mileage. When I first got it I drove it like I stole it- you know, to break it in right lol. For the last 6 months I rarely drive over the speed limit and my average is the same ( calculated). If you’re getting 12 while towing 8k then you are doing great, I get 9 with 7k. Mine is stock with Bridgestone a/t’s . With the fuel prices jumping again and looking to hit $8/ gallon I won’t be going anywhere and it will be getting awesome mileage. Everybody buckle down.

 

[Oldschool]

I’m gonna be going further tomorrow, mostly two lane. I’ll see how it does.
Brought this home today, 50 miles and averaged 17 at 70. Weighs about 2,250 lbs. empty.
Soon Im going to be maxing out this 10k trailer and will be seeing if this version of the AT4 will tow the 13k it’s rated at.
I plan to get airbags or may go with anti-sway hitch. Ain’t sho.

Please don’t max out your half ton truck ! I don’t care what the max is, it is our responsibility to keep others safe on the roads. You are still only riding on 6 lug wheels and studs. Best regards

 

[Andystoy AT4]

I made my first towing run yesterday (5600km/3500 miles on truck), tandem aluminum trailer 900 lbs, sxs 2300 lbs. total about 3200 lbs. not very heavy but not very aerodynamic. Going up empty 28.6 mpg. coming back with trailer 100kph/62 mph. 15.47 mpg. Temp about 3C/36 F no wind very light traffic and rolling paved 2 lane.

Interesting to watch the boost on the idash empty 6-9 psi, towing up to 24 psi. on hills, soot dropped from 86% to 60% in about 240km/150 miles without going through a regen and EGT empty 600-800F vs 800-950F towing. Towing I was burning roughly twice the fuel that I was empty. Banks has a HP display and it visually correlates to the fuel useage and boost.

Before the first tow I checked my oil level and was right at the top of the dipstick, after the short tow I am almost a 1/4 of a quart down at 6000/3750 miles. It appears the extra boost and fuel useage during towing caused a slight drop in oil level.

Compared to my previous 6.0 2016 3500 SRW gas I used about 4l/1usg less fuel. We have about 5"/12 cm. of fresh wet snow this morning so my timing was good.