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Old 06-25-2019, 09:29 AM   #81
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I purchased a 2015 1500 with a 6.2, 12000 tow package to pull 8000 lbs toyhauler.

Problem #1. Requires 91 octane.
Problem #2. 26 gallon tank. Got around ten mpg. Refueling a pita and way to often.

Unbelievable mpg empty and commuting for a 420hp truck. (I still have it)

Ended up buying a class c toyhauler. Only get 8mpg on regular, but has a 55 gallon fuel tank.
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Old 06-25-2019, 11:26 AM   #82
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1500 or 2500 Gasser

I had a 6.2 L 1500 but now I drive a 2500 HD GMC Denali. I switched not because the 1500 was not enough truck, but because with only a 24 gallon fuel tank and 8 mpg, I was refueling too often while towing on long trips. Compounding the frequent refueling, trying to get a truck and camper through some of the smaller fuel stops was a nightmare. So I swapped to diesel and use the truck fuel lanes at Pilot and Flying J with no stress. I also gained a 36 gallon fuel tank and 11-12 mpg while towing a 21 foot travel trailer.
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Old 06-25-2019, 11:43 AM   #83
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Plan two rvs ahead, 5th wheel, payload over 1.5 ton and tow 16,000 lbs, you'll save in the long run, l did and 3 RV s later got the 5th wheel we love.
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Old 06-25-2019, 12:14 PM   #84
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Maybe our experience will help. We towed a 30' travel trailer with a 1500. Did it work for short trips, 2 hours or so driving, close to home? Yes, it did. Longer trips seemed to be more taxing on it. We upgraded to a 2500. The towing experience is noticeably less stressful. Now, does the wife like driving a 2500 to Walmart? In her words, it's like driving an aircraft carrier to get groceries. Parking is an issue. We do have a long bed, so it's a bit worse than a short bed.
Interesting point on length. We used to have a reg. cab F150 with a long box. I could drive it in crowded parking lots and get into just about any stall. Then we moved up to an extended cab + long box. That extra 18" or so made a HUGE difference and made it way harder to get into parking lots and even noticeably harder to make sharp right hand turns on streets, esp. with the TT behind.

Now we have a crew cab with 6.5' box. I never wanted anything but an 8' box but I used to load it with plywood, lumber & drywall over the years. I'm finding the 6.5' box is plenty good for all the camping stuff we take. Having a full size rear seat area is awesome. I find having longer wheelbase helps noticeably with reducing sway and is more stable.

Just don't like having to have 4x4. 'Bout all you can get these days unless you special order new. All that extra metal & weight must have some sort of effect on performance and mileage? The marketers have done a good job.
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Old 06-25-2019, 12:15 PM   #85
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This helps out a lot. I was just going to ask people approximately the MPG of the 2500 as a daily driver. Just one more thing to consider in this.

I do struggle with going back and forth of some things. Like the daily driver issue. I still have years of work left seeing as I am not even close to retirement. So long trips would be a 1 or 2 times per year and then shorter trips throughout the year for holiday weekends and maybe the occasional weekend getaway. I am still trying to get an idea of what my DW is looking at for future trailers as well. I guess this is why I am asking so far in advance for real world ideas and advice.
My 2500 HD 6.0L gets about 12 mpg through town. Rural areas with 50-60 mph speed limits I can push 17 mpg. Freeway at 75 mph gets around 15 mpg. It's not a daily driver, but I don't just drive it for towing, either.

But I didn't buy it for mileage. If you're that concerned about mileage, get a smaller TT and a 1500 or find a cheaper hobby.

For 10,000 mi/yr at $2.80/gal, the price difference in fuel between 12 mpg and 17 mpg is about $686. To me, the bigger truck is worth it.
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Old 06-25-2019, 12:20 PM   #86
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My 2500 HD 6.0L gets about 12 mpg through town. Rural areas with 50-60 mph speed limits I can push 17 mpg. Freeway at 75 mph gets around 15 mpg. It's not a daily driver, but I don't just drive it for towing, either.

But I didn't buy it for mileage. If you're that concerned about mileage, get a smaller TT and a 1500 or find a cheaper hobby.

For 10,000 mi/yr at $2.80/gal, the price difference in fuel between 12 mpg and 17 mpg is about $686. To me, the bigger truck is worth it.
X2 on the milage. Unless i drive a bit harder and im definitely guilty of time to time. I aslo have never taken fuel mileage into consideration for what i drive. I get it because i need it or like it. I do drive mine on a daily basis. Sometimes i think about getting a civic beater but i would rather drive my truck.
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Old 06-25-2019, 01:16 PM   #87
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Originally Posted by rockfordroo View Post
My 2500 HD 6.0L gets about 12 mpg through town. Rural areas with 50-60 mph speed limits I can push 17 mpg. Freeway at 75 mph gets around 15 mpg. It's not a daily driver, but I don't just drive it for towing, either.

But I didn't buy it for mileage. If you're that concerned about mileage, get a smaller TT and a 1500 or find a cheaper hobby.

For 10,000 mi/yr at $2.80/gal, the price difference in fuel between 12 mpg and 17 mpg is about $686. To me, the bigger truck is worth it.


Not concerned with fuel mileage I was just curious for the most part Seeing as how they donít rate the HD trucks thatís all. If people were to say they get 8Ė10 mpg average while driving then maybe a concern but 15 or so I can handle thatís for sure. And who knows I may just keep my current ďmini man vanĒ for my daily driver to and from work.
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Old 06-25-2019, 02:14 PM   #88
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1500 or 2500

My wife and her late husband had a '05 1500 Z71 silverado with the 5.3. He kept complaining of the truck shifting gears to maintain speed. If you are going to pull a trailer get a truck that is made for pulling, ie 3/4 or more. What is also important is getting an engine that is made for pulling. We have a Flagstaff 25BDS. My '15 F150 with 3.5 will pull that trailer, but also swaps gears when maintaining highway speeds. She traded her 1500 for '19 2500 Z71 LTZ with duramax diesel. 450HP and most importantly 915 ft/lbs of torque. Not worried about pulling that trailer anywhere now. When I retire I'll upgrade to a toyhauler and use my daily driver to pull it.
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Old 06-25-2019, 07:52 PM   #89
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Truck for towing

I have a 2014 Silverado High Country 1/2 ton. And pull A 26í travel trailer. The HC has the 5.6 gas engine with lower rear end and the tow package, it is made for towing. Tt weight loaded is about 8,000 or so. We have pulled it through the Colorado mountains and the Canadian Rockies. It slows down on steep grades but Iím not in a hurry and pass semi trucks, now problem stopping with the downgrade assist 3/4 ton diesel would be better but Iím happy
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Old 06-25-2019, 10:11 PM   #90
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My 5.7l GMC 2007 1500 just had a cylinder die so instead of fixing it I decided to get a new truck. Our TT Is about 5700 lbs dry but I knew we might upgrade to a fifth wheel some day. I got lucky and found a 2016 GMC 6.0l 2500 with less than 100k miles on it. The towing difference is night and day. When not towing it drives like a tank. As people have said, you can really feel the difference in build quality and stability. It's just a heavier duty truck...
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Old 06-25-2019, 11:19 PM   #91
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Originally Posted by rockfordroo View Post
My 2500 HD 6.0L gets about 12 mpg through town. Rural areas with 50-60 mph speed limits I can push 17 mpg. Freeway at 75 mph gets around 15 mpg. It's not a daily driver, but I don't just drive it for towing, either.

But I didn't buy it for mileage. If you're that concerned about mileage, get a smaller TT and a 1500 or find a cheaper hobby.

For 10,000 mi/yr at $2.80/gal, the price difference in fuel between 12 mpg and 17 mpg is about $686. To me, the bigger truck is worth it.
Had a 15' 2500 6.0. It was 11 empty all day and 8 towing.
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Old 06-25-2019, 11:27 PM   #92
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Had a 15' 2500 6.0. It was 11 empty all day and 8 towing.
my 03 6.0 12 city 14 to 15 country , towing from 6.5 to a high of 10.5 avg 8.5 to 9
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Old 06-26-2019, 06:41 AM   #93
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You are welcome. It is a good thing you are doing your on homework rather than relying on the sales representative at your local dealer. A lot of times they just want to sell you a truck.
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Old 06-26-2019, 07:07 AM   #94
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I had 2500 Chevy with 6.0 and 4:10 gear. Towing 9000# tt got around 8 to 9mpg towing. Highway driving at 70 and not towing got 15mpg. Towing was great. Later RJD
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Old 06-26-2019, 07:12 AM   #95
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If you look at a diesel you get better mpg plus exhaust braking if you go into mountains.
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Old 06-26-2019, 07:18 AM   #96
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With the 6.0 once in TH mode and deciding grades tap brake and it goes into a braking mode worked good. Later RJD
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Old 06-26-2019, 09:53 AM   #97
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If you look at a diesel you get better mpg plus exhaust braking if you go into mountains.
I'd say, "Maybe" on the MPG. My light trailer puts me at 10-11 mpg over the 11,000' Ike Gauntlet. I'd probably be in the 6-8 mpg range with a big TT or 5er. I don't think diesel will get any fuel economy savings that is significant enough to factor into any decision making.

The ease of tow is remarkable. Up and over. The only thing I worry about is accidentally speeding as I go up 6-7% grades in 5th gear.

The exhaust braking is amazing. I'm still getting used to my Ford automatic brake setting (essentially reverse of cruise control using exhaust brake & gearing), but I'll generally only tap my brakes twice on the entire downhill journey. The exhaust brake locks me into a nice, safe, easy descent.

Back to the OP who was asking specifically about gas trucks to tow 30', 8,000 lb trailers at elevations and over mountains: I'd be looking at a HD platform. A properly equipped 1/2 ton (e.g., F-150 3.5 EB with HDPP) could do that and be within spec. I think the towing experience would be more enjoyable in a 3/4 or 1-ton.

As Drax said above:
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Having towed a 31ft TT, that was just over 8,000lb loaded, with both a half-ton and 1-ton SRW truck, I’d never tow a trailer that size with a half ton again. I don’t care what the truck mfrs say the trucks can tow, I’d do a 26ft, 7,000lb max trailer with a half ton. Anything more and I’d rather have a 3/4 ton minimum just for the stability and payload.
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Old 06-26-2019, 10:11 AM   #98
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With the 6.0 once in TH mode and deciding grades tap brake and it goes into a braking mode worked good. Later RJD
Most of the time on flats i barely have to brake much the transmission does a great job.
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Old 06-26-2019, 10:21 AM   #99
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As the OP stated, he has little to no knowledge of trucks. Sooooo even though he was asking about gas motors, those of us that have pulled with both, hope that he could gain some insight on ALL his options. I'll go away now.
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