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06-04-2020, 07:05 PM
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#1
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Junior Member
Join Date: May 2019
Location: Birch Bay WA-Casa Grande AZ
Posts: 24
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2020 Chev High Country 2500 HD w new Duramax and 10 speed
Well, i sold my Cummins Beaver Monterey, loved it but it was time for a change, and i bought my new Duramax Chevrolet.
So far the fuel economy has been unbelievable on a drive from AZ to WA. I averaged over 21 MPG at posted speeds and a max of 70 on the higher speed highways. one 50 mile stretch coming down out of the mountains to I-5 actually got 35.9 MPG, crazy. The torque is incredible and the shifting is invisible.
Now comes the first test, i am leaving tuesday to go to central CA and pick up a 36' 5th wheel (about 16,000 lbs) so i will closely track fuel economy in both directions and let y'all know. Wish me luck!
This new Chev is insane with technology, i am still trying to learn it all.
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06-04-2020, 07:09 PM
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#2
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Senior Member
Join Date: Aug 2017
Location: Reno, NV
Posts: 136
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Congratulations! Love getting new big boy toys haha enjoy it and stay safe! [emoji111]
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06-15-2020, 06:46 AM
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#3
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Senior Member
Join Date: Feb 2009
Location: Placerville CA
Posts: 248
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Please keep us posted on this truck, your opinion and experience is of great value to me as I am thinking about buying this truck. Thank you!
__________________
Jim
2021 Grand Design Reflection 303RLS
Retired and Having Fun
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06-15-2020, 10:57 PM
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#4
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Junior Member
Join Date: May 2019
Location: Birch Bay WA-Casa Grande AZ
Posts: 24
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2020 Chevrolet High Country w new Duramax motor and Allison 10 speed
Well, I just finished my first trip Blaine Washington to Stockton California back up through the mountains to Coeur d'Alene Idaho and back over Highway 20 2 Blaine. The trip down I was empty with a box cover on and I average 21.5 miles per gallon, very impressive.
I picked up a Forest River Blue Ridge 3600, I believe it weighs about 16,000 lbs. I drove all the way to Coeur d'Alene 60 miles per hour with the cruise control on. All through the mountains I was able to maintain this speed touching the throttle and was passing sami's left and right
The fuel economy did suffer, I averaged just over 11 miles per gallon considering that I was in the mountains quite a bit I am not unhappy but had hoped for better
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06-16-2020, 05:45 AM
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#5
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Senior Member
Join Date: Feb 2009
Location: Placerville CA
Posts: 248
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Quote:
Originally Posted by Bob Brooks
Well, I just finished my first trip Blaine Washington to Stockton California back up through the mountains to Coeur d'Alene Idaho and back over Highway 20 2 Blaine. The trip down I was empty with a box cover on and I average 21.5 miles per gallon, very impressive.
I picked up a Forest River Blue Ridge 3600, I believe it weighs about 16,000 lbs. I drove all the way to Coeur d'Alene 60 miles per hour with the cruise control on. All through the mountains I was able to maintain this speed touching the throttle and was passing sami's left and right
The fuel economy did suffer, I averaged just over 11 miles per gallon considering that I was in the mountains quite a bit I am not unhappy but had hoped for better
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Thank you Bob for this information! This is exactly what I am looking for being that I am considering purchasing the truck you have.
We currently have a class A 35 foot motorhome with an 8.1 liter gas engine that on a good day gets 7mpg while towing a Chevy Tracker. We are considering a smaller fifth wheel trailer next. My current truck is an 07 Toyota Tacoma that has been great but it is time to replace it as my need for a heavy duty truck has increased.
When your time allows please post some pictures of your new rig and keep us updated on the truck and camper.
Thanks very much!
__________________
Jim
2021 Grand Design Reflection 303RLS
Retired and Having Fun
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06-17-2020, 02:50 AM
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#6
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Senior Member
Join Date: Feb 2019
Posts: 524
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The 10-speed is the bees knees.
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06-17-2020, 06:36 AM
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#7
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Senior Member
Join Date: Feb 2009
Location: Placerville CA
Posts: 248
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Wow, nice rig, now I really want one!
__________________
Jim
2021 Grand Design Reflection 303RLS
Retired and Having Fun
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06-17-2020, 07:02 AM
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#8
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Senior Member
Monaco Owners Club Oklahoma Boomers Club Retired Fire Service RVer's
Join Date: Aug 2017
Posts: 621
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Bob, you must have had stars in your eyes and didn't notice the salesman pulled a switch on you. Great looking rig anyway!
__________________
Jim & Connie, Edmond Oklahoma
2000 Monaco Signature Classic FD/SO 42' / 1969 VW Bug or 2500HD
"My chains are gone, I've been set free"
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06-17-2020, 07:38 AM
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#9
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Senior Member
Join Date: Jun 2006
Location: Dallas,OR
Posts: 4,584
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You intend to put a 16000 pound fiver behine a 2500 truck? Good luck. Made that same mistake back in 2005. By 2007 I was finally able to aford to get the right tool for the job.
BTWmback in 2005 my LLY D/A could easily get 21 MPG at 70MPH.
__________________
Don and Lorri
Resident Dummy.
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06-18-2020, 09:00 AM
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#10
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Junior Member
Join Date: May 2019
Location: Birch Bay WA-Casa Grande AZ
Posts: 24
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Good morning Don I forgot to mention that is a 2500 HD with a towing capacity of 30,000 pounds. I am certain that the truck Evan proved a great deal since 2005 and the suspension is very stiff and pulls this trailer really well.
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06-19-2020, 07:24 PM
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#11
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Registered User
Join Date: May 2015
Posts: 683
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Tow ratings are worthless. He is talking about your payload with the 16k fifth wheel. Despite all the improvements you still have a 3500 pound pin sitting atop another 3-4000 pounds that is your truck rolling on two E load range tires. Not a great way to roll with your family. When you add up your tire max load and subtract your scaled weight it will be an eye opening experience.
And yes the Duramax has been getting that kind of MPG for well over a decade.
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06-20-2020, 07:19 AM
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#12
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Senior Member
Join Date: Nov 2013
Location: Elko, Nv
Posts: 2,425
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My 2018 GMC 2500 weighs 3300 lbs on the rear full of fuel, 2 people and typical crap in the truck. That leaves just short of 4k of load that the tires can can support by their rating.
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06-20-2020, 07:12 PM
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#13
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Registered User
Join Date: May 2015
Posts: 683
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I have bought a ton of E range tires. None rated for 3600 pounds each like yours-except maybe some 40” mud tires. What brand and size are they?
6390 (3195 per tire) pounds is the rating of just about all the stock size E range tires for the 2500HD. There are a few oversized tires that can eek out a few more pounds on oversized wheels. That leaves barely over 3000 pounds of TRUE payload for the rear axle-NO MATTER WHAT THE STICKER SAYS FOR THE TOTAL. And under the best of circumstances a 16k fiver will add about 3500 lbs of weight on the rear axle-for a total of over 7000 pounds with a light hitch. Many 16k fifth wheels-especially toy haulers-can be significantly more. And if you think that weight doesn’t increase as you are bouncing across a bridge you’re kidding yourself.
This is why people that have a lot of experience towing fifth wheels generally have duallys. 13,000 pounds plus of rear tire ratings. I am not policing what anyone else considers acceptable risk I am just explaining to the OP what the earlier criticism was about.
Oh and don’t forget Chevy told him he could tow a 30,000 pound fifth wheel with a 6000 to 7000 pound pin
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06-20-2020, 08:40 PM
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#14
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Senior Member
Join Date: Nov 2013
Location: Elko, Nv
Posts: 2,425
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My current tires are rated for 3525, so a little short of what i said. I can get an 18 in tire thats rated at 4080 and will fit my wheel size if i felt the need. Cooper At3 xlt 265/70/18 is my current tire.
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