I couldn’t tell a difference in fuel mileage either going from 91-93 here in Kentucky to 87. And my elevation is around 1100’ where I live and ranges from about 800’ to 2500’ where I typically go. With that said, my truck typically gets between 14-15 mpg driving to work. I feel like that would be what you’re considering in town. It’s a 30 mile round trip for me. I would say sort of in town but a little highway, rural for sure. But 14 miles in the morning exclusively on a 2 lane road, very curvy, a few small grades and speeds between 35-60 mph. On the way home it’s about 16 miles because I go a different way to keep phone signal (I talk to my parents on the way home) and it’s about half and half 2 lane same conditions (curvy, small grades) and 4 lane, still curvy and one pretty good grade, 6-7% for over a mile. So that’s my daily driving. Best I’ve ever got on a trip was 17.3 and that was nearly a 400 mile trip. Half of that 70 mph. Probably 20-25 miles roughly pure city and then the rest roads like my normal daily driving. That’s a 2022 Silverado 2500 crew cab LT Z71 with 20” wheels and of course the 6 speed. I’m just over 28,000 miles now too and about 780 engine hours.
Have a 2023. Hwy at 65 gets me around 18-19 mpg. Also found an auxiliary tank maker from FL and added 41 gal in the bed with a Carter pump for transferring to main tanks. Works perfectly
I've said this before on other channels and will say it again. Wait until it hits the 2500 mile mark. I can't explain why this happens, I'm still thinking there is an ECU change at that point. But the gasser wakes up big time at that mark....try to make a mental note of that. Do a 0 to 60 right now. Then do one after it passes the 2500 mile mark....many on the forums agree with me.....they wake up BIG TIME at that point....would love to hear your feedback.
I’ll say my 23 definitely got better mileage as the miles went up. Once I hit about 5K it saw a bump. My 24 has been pretty poor so far, but to be fair it only has 1000 miles on it and I know it will get better with time. I do agree with you I think GM really holds these back till they get some miles/hours on them. First time I towed with the 24 felt like it was kind of doggy but others have mentioned they get “better” with time. We’ll see.
I’ve got a 22, and I’m getting 12 in town, 16/17 hwy, 14 on highway hammering it. Then I get about 8 pulling my 7.5 x 18 enclosed steel trailer and 3 snowmobiles at 75 on highway
id like to hear from folks with 120k plus miles on this engine ive seen ole 6.0 liters with 300k and they were worked hard... is there extra GM aprooved maintenance the keeps the injecters clean with the direct injected engine? i 100% belive these engines r great to 60k id like to see what happens after that once these have been in the hands of customers outside the lab
You have swayed me to go with a chevy for a gasser, seems like the smarter buy but man my heart still wants that 7.3 godzilla tremor package, which is gonna to win out I don't even know yet
I have a 2023 2500hd wt dabble cab longbed 6.6 6 sp transmission in South Florida the fuel I use is 87 octane e10 at 60 miles per hour at sea level with cruise control set truck gets 16.5 mpg in Miami traffic I get 9 to 11 mpg
I watched another video of a new 2500 owner who claimed the sheet metal is very thin. Said he has a dent from something thrown from a lawnmower and also kicking dirt off shoes will dent the metal around the base of the door. I am not saying I believe that but What is your experience with it? Besides the rare oil burning claims it is really the only negative I have found on the GM HD trucks.
I can confirm the sheet metal on these things is weak. I had a calf back into the door of my 23 and it put a big crease in it. Guarantee that wouldn’t have happened with some of my older GM pickups. They have to lighten them up some way though considering the frame/driveline weights keep climbing.
Everybody saying they’re seeing 15 miles a gallon in town are full of shit I have a 2024 loaded LTZ with the z71 3:73 gears. I’m lucky if I see 11 1/2 or 12 miles a gallon around town , and towing my Bass boat which is just a 21 foot ranger with a tandem axle trailer I think maybe weighs 3000 pounds trailer and boat I get 10 miles a gallon so I don’t know who on here can attest to what I’m saying, but there’s a lot of people on this page that are full of shit or don’t know how to check their fuel mileage and simply going off of what their computer says
I have a 2022 with the 6 speed and I average 15-16 mpg unloaded driving to work every day. 40 mile round trip , I would say 15 of those miles everyday are “intown , stop and go driving” the other 25 miles are speeds of 55-60 mph. I’ve checked many times at the pump and it is very close to what the computer says.
How much weight were you towing? I'm in a 2500 rental and have put 9k miles on it since the end of March. 7-8mpg towing 13-15k; 18-19mpg w/ 3500# trailer & 21-22 empty (900# of gear in the bed.
@@MrAaron5627 Maryland. When I go into PA and WVA there's a lot of elevation change. Maryland and east not so much. Most I've pulled is 16.5k. not in elevation though. I normally pull between 10-13k.
@@chadmiller6487 I used to drive chemical tankers. Driven 79 many times; used to deliver just north of Clarksburg. Also delivered to Kodak in Rochester, NY. I was based out of Jacksonville, Florida. How does your truck pull out there? I assume it's not bad?
6.6 l has a high compression ratio. I'm surprised you don't see a benefit using the higher octane fuel. Maybe using the higher octane fuel over a longer duration is needed to allow the ECM to adjust and see a benefit?
Have you checked your oil lately? I’ve heard of some of the gassers using a quart of oil every thousand miles. That seems extreme. I drive a 2020 GMC Sierra Denali with the Duramax 6.6. 10 speed Allison. We may be selling the fifth wheel so the truck may go also. Might be looking for a gasser this time.
Im looking for a 3500 Alaskan now fuel mileage doesn't bother me i dont buy a full size Truck for economy i have a moded Scatpack Challenger with 763 whp @ 4.6 in city so the truck will be a like a prius lol😅
You mentioned early in the video that you had idled the truck for about an hour while at the gym. How do you accomplish that? My 2022 will only idle for about 15 minutes and than shuts off. I am speaking about being in "park" though.
I'd day I get to the gym about 30 minutes early, sometimes they let us in. Plus I do remote start when I wake up to go 15, then remote start it from the app in the gym before leaving. That's about an hour. Then throughout the day before and after work it gets idled....I did the same with the 7.3.
Does this have that cylinder deactivation crap on the 6.6? I was thinking of getting this truck, but I don't want it if cylinders are deactivating. I don't give a rats ass about MPG. I'll just keep my 2014 Tundra that fires on all cylinders all the time. Great video!
@@automotiveinquiries9673 awesome! A real truck like the Tundra... or what the Tundra used to be until they put that turbo charged V6 garbage on it like the Ford F150.
hey buddy I'm thinking about trading in my 2017 ram 6.7 cummins and buying the 2024 chevy gaser and I'm pulling a 2014 heartland sundance 33oock fifthwheel and it weighs 14,200 fully loaded. just curious if it's worth. maintenance wise it's cheaper than diesel
I just added a 24 ram 3500 diesel to the channel and to be honest, it didn't tow as well as the chevy gas. This truck, we did tons of towing with it over the summer and it never skipped a beat. The 24 ram did have the cummins power, but overall the truck didn't have as good as the chevy....the 6.6 chevy is in my opinion the best gasser out there. I've since got rid of the ram. I would hands down recommend the chevy or gmc gas over a new diesel. A third of the maintenence, diesel prices are up to a buck more a gallon here. The gm trucks ride better (seats are firmer) but still rides great, but the truck just feels nice. You'd and your passengers would also enjoy the huge crew cab space (and look at the front passenger foot room. Ram has a large bell housing intruding on the front passenger). A larger bed by almost a half a foot. If you felt diesel was still the way, the dmax Gen 2 L5P is exceptional. If you haven't head over to the channel and check out my other towing challenges.....I called this truck kong, it crushed 17k 5th wheel, up the Ike, wolf creek pass and out on the plains...3 separate tow series. I also have the tow with the ram. I'll never buy a new diesel again just because of the emissions and for what I to, the Gas does excellent. Hopefully that helps.
Just got a new 2024 HD 6.6 Gasser, so far a 1000 km's in and its been pretty great! Got it for a 44 ft Hauler. Should pull it with ease when she's broken in for towing.
If manufacturers didn't make trucks as big as damn box cars do you think that we could actually get it to maybe 15 to 20 miles a gallon just like normal
@freedomisntfree44 ,thanks so is it as good as an Allison, thinking of a new truck ,my 2500hd gas has given me a lot of problems,,electrical, C6 transmission,,
@@freedomisntfree_44 A lot of people like to talk too much. I remember when the Duramax first came out. Those people said it's an "Isuzu" engine. End of the day the Duramax was a great engine, and the new "Allison" transmission will probably be a great trans.
It's not always about affording the fuel. If I drive 70k miles a year towing a trailer at 7mpg in a Ford(10k gal/yr) but 8mpg in a Chevy(8750 gal/yr im going to save $4375/yr in fuel at $3.50/gallon. So, if I have 5 trucks in my fleet, that's $21,875/yr difference in fuel costs... Just saying.
@@MrAaron5627 1mpg difference is really splitting hairs. There are so many factors that play into MPG. You would have to take different trucks down the same road at the same time to really compare them. Even one day difference could change wind, temp and traffic.
@mossman381 a small fleet of 5 trucks that do 350k fleet miles a year... 1MPG can cost you or save you money. Having a fleet of 100 trucks that do over 1M fleet miles a year... 1MPG can get a fleet manager's bonus a boost or get it taken away completely. 1MPG is splitting hairs if you or your fleet drive less than 70-100k miles/yr. Also, the factors you mention are legitimate. I used to use a weather app that gave me surface wind speed and direction whenever I drove over the road.
@mossman381 well, I'm driving a rental 2023 chevy 2500 4x4 crew cab gasser right now while I'm waiting for my new company truck to come in. I've put 13k miles on it since the end of March. I tow anywhere from 2500 to 10k lbs on a 19' 3500# kneeling trailer. So....
Seems to be getting pretty decent mpg. I don't really care what any of mine get long as its not sitting at the dealership for weeks at a time.
Great video. Still waiting on my 2024 to get that good of mpg
15 city and 18 hwy is pretty good. I have a 21 GMC HD with the 6.6 gas and the 6l90, I get about 13.5 overall and my truck is 2wd.
Nice update and look forward to some more.
I couldn’t tell a difference in fuel mileage either going from 91-93 here in Kentucky to 87. And my elevation is around 1100’ where I live and ranges from about 800’ to 2500’ where I typically go.
With that said, my truck typically gets between 14-15 mpg driving to work. I feel like that would be what you’re considering in town. It’s a 30 mile round trip for me. I would say sort of in town but a little highway, rural for sure. But 14 miles in the morning exclusively on a 2 lane road, very curvy, a few small grades and speeds between 35-60 mph.
On the way home it’s about 16 miles because I go a different way to keep phone signal (I talk to my parents on the way home) and it’s about half and half 2 lane same conditions (curvy, small grades) and 4 lane, still curvy and one pretty good grade, 6-7% for over a mile.
So that’s my daily driving. Best I’ve ever got on a trip was 17.3 and that was nearly a 400 mile trip. Half of that 70 mph. Probably 20-25 miles roughly pure city and then the rest roads like my normal daily driving.
That’s a 2022 Silverado 2500 crew cab LT Z71 with 20” wheels and of course the 6 speed. I’m just over 28,000 miles now too and about 780 engine hours.
My best was also 17.3mpg, 2 weeks ago. 70-78mph freeway. 2022 LT Z71 with 18” tires, extra cab
Have a 2023. Hwy at 65 gets me around 18-19 mpg. Also found an auxiliary tank maker from FL and added 41 gal in the bed with a Carter pump for transferring to main tanks. Works perfectly
Who makes this tank please?
Try RDS Manufacturing, Inc
Perry Fl
I've said this before on other channels and will say it again. Wait until it hits the 2500 mile mark. I can't explain why this happens, I'm still thinking there is an ECU change at that point. But the gasser wakes up big time at that mark....try to make a mental note of that. Do a 0 to 60 right now. Then do one after it passes the 2500 mile mark....many on the forums agree with me.....they wake up BIG TIME at that point....would love to hear your feedback.
I’ll say my 23 definitely got better mileage as the miles went up. Once I hit about 5K it saw a bump. My 24 has been pretty poor so far, but to be fair it only has 1000 miles on it and I know it will get better with time. I do agree with you I think GM really holds these back till they get some miles/hours on them. First time I towed with the 24 felt like it was kind of doggy but others have mentioned they get “better” with time. We’ll see.
Do you think this applies across brands to Ford and Ram? Or is it just a GM thing in the 6.6?
@@heathmcateer I honestly have no idea.
I agree
Why did GM delete the 12 volt plug on all trims LT and above ????
That’s good, I average 12.5-13 in town with idling some towing. 15 on the highway set at 75
You’re full of Shit
I’ve got a 22, and I’m getting 12 in town, 16/17 hwy, 14 on highway hammering it. Then I get about 8 pulling my 7.5 x 18 enclosed steel trailer and 3 snowmobiles at 75 on highway
Damn I got a 2020 ram 2500 which gives me 10 city, can’t imagine what will bw the mpg while pulling a big trailer behind 6-7?? 😭
id like to hear from folks with 120k plus miles on this engine ive seen ole 6.0 liters with 300k and they were worked hard... is there extra GM aprooved maintenance the keeps the injecters clean with the direct injected engine? i 100% belive these engines r great to 60k id like to see what happens after that once these have been in the hands of customers outside the lab
You have swayed me to go with a chevy for a gasser, seems like the smarter buy but man my heart still wants that 7.3 godzilla tremor package, which is gonna to win out I don't even know yet
I have 2022 hd custom 38 thousand miles no problems enjoy it
I believe 2500 hd is the best way gasoline ⛽️
I have a 2023 2500hd wt dabble cab longbed 6.6 6 sp transmission in South Florida the fuel I use is 87 octane e10 at 60 miles per hour at sea level with cruise control set truck gets 16.5 mpg in Miami traffic I get 9 to 11 mpg
My 23 gasser with 6" lift and 35s averages 11mpg so pretty much spot on. Mine is also all highway miles.
For a 7500lb truck, those numbers sound good
My New GM's 04,11,15, & 22 HD Gas ALL averaged 13.8 MPG combined with my average highway speed at close to 80 mph
If your in colorado .your mileage will be better .
When in Colorado my MPG was quite a bit better then in lower altitude Oklahoma
Where did u get the z71 rocker panel kick guards at?
I watched another video of a new 2500 owner who claimed the sheet metal is very thin. Said he has a dent from something thrown from a lawnmower and also kicking dirt off shoes will dent the metal around the base of the door. I am not saying I believe that but What is your experience with it? Besides the rare oil burning claims it is really the only negative I have found on the GM HD trucks.
I can confirm the sheet metal on these things is weak. I had a calf back into the door of my 23 and it put a big crease in it. Guarantee that wouldn’t have happened with some of my older GM pickups. They have to lighten them up some way though considering the frame/driveline weights keep climbing.
it's true thin metal
Everybody saying they’re seeing 15 miles a gallon in town are full of shit I have a 2024 loaded LTZ with the z71 3:73 gears. I’m lucky if I see 11 1/2 or 12 miles a gallon around town , and towing my Bass boat which is just a 21 foot ranger with a tandem axle trailer I think maybe weighs 3000 pounds trailer and boat I get 10 miles a gallon so I don’t know who on here can attest to what I’m saying, but there’s a lot of people on this page that are full of shit or don’t know how to check their fuel mileage and simply going off of what their computer says
I have a 2022 with the 6 speed and I average 15-16 mpg unloaded driving to work every day. 40 mile round trip , I would say 15 of those miles everyday are “intown , stop and go driving” the other 25 miles are speeds of 55-60 mph. I’ve checked many times at the pump and it is very close to what the computer says.
Best I get Hwy in my 3500 drw 6.6 gas is 15.5 unloaded and 8-9 towing
How much weight were you towing? I'm in a 2500 rental and have put 9k miles on it since the end of March. 7-8mpg towing 13-15k; 18-19mpg w/ 3500# trailer & 21-22 empty (900# of gear in the bed.
@@MrAaron5627 normally between 10-13k.
Where do you live? Lots of elevation change? What's the most you've pulled with your truck?
@@MrAaron5627 Maryland. When I go into PA and WVA there's a lot of elevation change. Maryland and east not so much. Most I've pulled is 16.5k. not in elevation though. I normally pull between 10-13k.
@@chadmiller6487 I used to drive chemical tankers. Driven 79 many times; used to deliver just north of Clarksburg. Also delivered to Kodak in Rochester, NY. I was based out of Jacksonville, Florida. How does your truck pull out there? I assume it's not bad?
6.6 l has a high compression ratio. I'm surprised you don't see a benefit using the higher octane fuel. Maybe using the higher octane fuel over a longer duration is needed to allow the ECM to adjust and see a benefit?
Have you checked your oil lately? I’ve heard of some of the gassers using a quart of oil every thousand miles. That seems extreme. I drive a 2020 GMC Sierra Denali with the Duramax 6.6. 10 speed Allison. We may be selling the fifth wheel so the truck may go also. Might be looking for a gasser this time.
Absolutely, zero oil consumption so far. This truck has been great so far.
I’ve not saw oil consumption yet 40 thousand miles
I have not seen any oil consumption, 55k mile on my 2022
Wonder how much the MPG would change with 35"s
Mine has 6" lift and 35s average is 11
Im looking for a 3500 Alaskan now fuel mileage doesn't bother me i dont buy a full size Truck for economy i have a moded Scatpack Challenger with 763 whp @ 4.6 in city so the truck will be a like a prius lol😅
You mentioned early in the video that you had idled the truck for about an hour while at the gym. How do you accomplish that? My 2022 will only idle for about 15 minutes and than shuts off. I am speaking about being in "park" though.
I'd day I get to the gym about 30 minutes early, sometimes they let us in. Plus I do remote start when I wake up to go 15, then remote start it from the app in the gym before leaving. That's about an hour. Then throughout the day before and after work it gets idled....I did the same with the 7.3.
Mine will idle all day long if you want to
I'm curiousas to what is your rear end ratio in that Chevy?
Does this have that cylinder deactivation crap on the 6.6? I was thinking of getting this truck, but I don't want it if cylinders are deactivating. I don't give a rats ass about MPG. I'll just keep my 2014 Tundra that fires on all cylinders all the time. Great video!
@@Nobamaable good question, the 6.6 L8T doesn't have any cylinder deactivation or active fuel management. It's old school.
@@automotiveinquiries9673 awesome! A real truck like the Tundra... or what the Tundra used to be until they put that turbo charged V6 garbage on it like the Ford F150.
hey buddy I'm thinking about trading in my 2017 ram 6.7 cummins and buying the 2024 chevy gaser and I'm pulling a 2014 heartland sundance 33oock fifthwheel and it weighs 14,200 fully loaded. just curious if it's worth. maintenance wise it's cheaper than diesel
I just added a 24 ram 3500 diesel to the channel and to be honest, it didn't tow as well as the chevy gas. This truck, we did tons of towing with it over the summer and it never skipped a beat. The 24 ram did have the cummins power, but overall the truck didn't have as good as the chevy....the 6.6 chevy is in my opinion the best gasser out there. I've since got rid of the ram. I would hands down recommend the chevy or gmc gas over a new diesel. A third of the maintenence, diesel prices are up to a buck more a gallon here. The gm trucks ride better (seats are firmer) but still rides great, but the truck just feels nice. You'd and your passengers would also enjoy the huge crew cab space (and look at the front passenger foot room. Ram has a large bell housing intruding on the front passenger). A larger bed by almost a half a foot. If you felt diesel was still the way, the dmax Gen 2 L5P is exceptional. If you haven't head over to the channel and check out my other towing challenges.....I called this truck kong, it crushed 17k 5th wheel, up the Ike, wolf creek pass and out on the plains...3 separate tow series. I also have the tow with the ram. I'll never buy a new diesel again just because of the emissions and for what I to, the Gas does excellent. Hopefully that helps.
Just got a new 2024 HD 6.6 Gasser, so far a 1000 km's in and its been pretty great! Got it for a 44 ft Hauler. Should pull it with ease when she's broken in for towing.
I’m at 40 thousand miles 6.6 ⛽️ no problem s
Pff I got 11,000 miles on mine and my average is 11.5
That looks like a '23 dash.
If manufacturers didn't make trucks as big as damn box cars do you think that we could actually get it to maybe 15 to 20 miles a gallon just like normal
Mine gets 15
I have the ‘24 GMC HD, I didn’t buy it for the gas mileage. I appreciate this video but the HD’s were made to haul and tow.
Does this truck have the Allison transmission
It has an Allison badge but Allison didn’t make it 😂
@freedomisntfree44 ,thanks so is it as good as an Allison, thinking of a new truck ,my 2500hd gas has given me a lot of problems,,electrical, C6 transmission,,
@@houstonbrown3450 no, fords transmission has beefier parts. I give all the 10 speeds a few years before I purchase.
@@freedomisntfree_44 A lot of people like to talk too much. I remember when the Duramax first came out. Those people said it's an "Isuzu" engine. End of the day the Duramax was a great engine, and the new "Allison" transmission will probably be a great trans.
@@mossman381 it is an Isuzu 🤣 only one building in house is ford.
cringe every time i see those sunglasses in the thumbnail
You people worried about fuel economy don't buy a 7 k lbs truck.
It's not always about affording the fuel. If I drive 70k miles a year towing a trailer at 7mpg in a Ford(10k gal/yr) but 8mpg in a Chevy(8750 gal/yr im going to save $4375/yr in fuel at $3.50/gallon. So, if I have 5 trucks in my fleet, that's $21,875/yr difference in fuel costs... Just saying.
@@MrAaron5627 1mpg difference is really splitting hairs. There are so many factors that play into MPG. You would have to take different trucks down the same road at the same time to really compare them. Even one day difference could change wind, temp and traffic.
@mossman381 a small fleet of 5 trucks that do 350k fleet miles a year... 1MPG can cost you or save you money. Having a fleet of 100 trucks that do over 1M fleet miles a year... 1MPG can get a fleet manager's bonus a boost or get it taken away completely.
1MPG is splitting hairs if you or your fleet drive less than 70-100k miles/yr.
Also, the factors you mention are legitimate. I used to use a weather app that gave me surface wind speed and direction whenever I drove over the road.
@@MrAaron5627 So where is this data on mpg of heavy duty trucks??
@mossman381 well, I'm driving a rental 2023 chevy 2500 4x4 crew cab gasser right now while I'm waiting for my new company truck to come in. I've put 13k miles on it since the end of March. I tow anywhere from 2500 to 10k lbs on a 19' 3500# kneeling trailer. So....