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Old 09-08-2015, 11:09 AM   #72
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DC Bruce. The GM variable displacement came out before 2014. I have it in my 2008 6L 1500 with Max Tow. No oil problems to date after 138000km.
The 4cyl mode will actually come on while towing our 25ft on the flat with a tailwind. It is so seamless that you have to be watching the DIC to tell.



George
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Old 09-08-2015, 11:20 AM   #73
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Old 09-09-2015, 05:54 AM   #74
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The 6-speed in the 2014 GMC/Chevy truck has a poorly chosen set of ratios. That's evident even when you drive the truck empty. With the 5.3 engine, it feels like you are always heavy on the throttle to get the truck to accelerate. The extra power of the 6.2 takes care of that, but TFLT Ike test of the 6.2 with the 6-speed vs the 8-speed in the 2015 model shows the difference between a poorly matched and a properly matched transmission. With the 8-speed, the 6.2 easily matched the Ecoboost towing performance while achieving better fuel economy. Also, unloaded, pickup trucks.com found the 6.2 got substantially better fuel economy than the Ecoboost, which was my experience: 400 miles at 24.9 mpg driving empty between 60-65 mph. The 6.2 has higher rated horsepower and torque than the Ecoboost, although that's probably not true at elevations over 5000 feet, thanks to the turbos in the Ecoboost which can compensate for the altitude. I think both engines are fine for towing any Airstream. As a personal preference, I don't care for the non-linear throttle response of turbocharged engines, although the Ecoboost is better than some. Others think it's fun.
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Old 09-09-2015, 06:18 AM   #75
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Also, the 2015 6.2l is a next Gen engine over the 6 speed version. More torque and hp than the old generation.
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Old 09-10-2015, 02:12 PM   #76
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Report on Chevy/GMC 1500 with 6.2 engine and Max tow pack

The information on the excessive oil consumption is not opinion but documented and acknowledged by GM. It has to do with deactivating the cylinders. Nothing is mentioned about it not working well but just as an operation it allows oil to spill past the cylinder when deactivated. This may be worse if deactivated during greater loads. I linked the one article. Also the 6.2 2015 uses. 3.42 rear and is rated at 15/21. I cannot believe that it does better than the economist mpg-wise. I do not have my tow mpg yet but I have local city and highway driving 16/23 and that with less than 1000 miles and calculated at the pump not the truck computer
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Old 11-25-2015, 11:19 AM   #77
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Well, I'm no longer on the fence. Today I pays my money and got a 2015 Silverado 6.2L, 8 speed maxtow, doublecab, regular bed. Because of business travel and getting several accessories installed, I won't pick it up until next Thursday, but the deed is done.

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Sorry about the turned photos....something wierd with my pic program today.
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Old 11-25-2015, 12:20 PM   #78
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Congratulations on your new TV! That is a nice color - will look good with your trailer. Also very good payload rating on the truck.
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Old 11-25-2015, 03:10 PM   #79
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You will be happy with this engine and drivetrain. Ours has taken our FC27 from Washington DC to LA in a month. We've pulled 9.5% grades up and down around Death Valley. Best 400 mile average MPG was 13.8; worst was 11.6 bucking a 30 knot headwind and ascending the Rockies.
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Old 11-25-2015, 03:11 PM   #80
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PS: I have added 1 quart of oil during the trip.
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Old 11-25-2015, 06:05 PM   #81
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Awesome truck! Is it strange that I have the same truck with the smaller 5.3L and my payload is 67lbs. more?
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Old 11-25-2015, 06:28 PM   #82
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It all depends on cab/bed configuration and option content. And the 6.2/8 speed is a bit heavier. Mine is a double cab and more loaded than I really wanted, but the deal was too good to pass or wait for another.
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Old 11-25-2015, 06:39 PM   #83
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Mine had more that I wanted also. I have 4 full size doors and a regular bed. Victory Red.

It must be because the weight difference of the engine/transmission.
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Old 11-25-2015, 08:52 PM   #84
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Rich
simply an awesome tow vehicle. Well matched to the 30/31 foot Classics.
"there is no replacement for displacement!"
Enjoy!
Pete
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