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2015 Chevy Silverado, GMC Sierra HD Trucks

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Old 06-20-14, 07:21 AM   #61
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Default GM Truck Tow Ratings Adjusted by Tougher Testing

http://www.autoguide.com/auto-news/2014/06/2015-gm.html

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Old 06-20-14, 08:45 AM   #62
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Originally Posted by Fizzboy7 View Post
LOL! Yes, that is true. However, the light truck industry has generally not embraced the letters "HD" on their models (more like 1500, 2500, 3500, 1/4 ton, 1/2 ton, etc). Now more so today, modern society is entuned to HD meaning high-def.
GM has used HD on their 1500 models since 2001. Now, my family has traditionally been a little slower in the adoption of technology, but I don't think HD televisions were that prominent back then.
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Old 07-22-14, 12:39 PM   #63
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Official Press: Gains 8-Speed

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2015 Chevrolet and GMC Pickups, SUVs to Offer Eight-Speed Transmission

DETROIT – Chevrolet and GMC have confirmed a new eight-speed automatic transmission will be standard on 2015 Chevrolet Silverado, GMC Sierra and GMC Yukon Denali/Yukon XL Denali models equipped with the 6.2L EcoTec3 V-8.

The GM-developed Hydra-Matic 8L90 eight-speed is approximately the same size and weight as the Hydra-Matic 6L80 six-speed automatic. Its 7.0 overall gear ratio spread is wider than GM's six-speed automatic transmissions, providing a numerically higher first gear ratio to help drivers start off more confidently with a heavy load or when trailering. The 8L90 also enables numerically lower rear axle ratios, which reduce engine rpm on the highway.

With 420 horsepower and 460 lb.-ft. of torque, the 6.2L EcoTec3 V-8 is the most powerful engine offered in any light-duty pickup, and offers a maximum available trailer rating of 12,000 pounds, based on SAE J2807 Recommended Practices. As with other EcoTec3 engines, it seamlessly switches to four-cylinder operation under lighter loads to improve fuel economy.

Additional technical details and the EPA estimated fuel economy will be announced closer to the start of production in the fourth quarter of 2014.
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Old 07-22-14, 11:44 PM   #64
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That 8-speed should be standard on all truck engines. Typical chinyzy trickle-down. What better and easier way to gain ground than to just make it standard, like it's going to be anyway in a year or two.

Also, I always have to chuckle when I hear the word "Eco-anything" related to such a beastly and thirsty engine. Psychological marketing to fool the public, just like "Ecoboost" (poor mpg's) and "clean diesel" (dirtier than gas engines).
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Old 07-23-14, 11:11 AM   #65
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Originally Posted by Fizzboy7 View Post
That 8-speed should be standard on all truck engines. Typical chinyzy trickle-down. What better and easier way to gain ground than to just make it standard, like it's going to be anyway in a year or two.

Also, I always have to chuckle when I hear the word "Eco-anything" related to such a beastly and thirsty engine. Psychological marketing to fool the public, just like "Ecoboost" (poor mpg's) and "clean diesel" (dirtier than gas engines).
You'd think that by moving to the 8AT rather than keeping the old 6AT too would be more cost effective
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Old 08-06-14, 11:10 AM   #66
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Default 2016 Chevrolet Silverado HD spied, could be testing a new diesel engine

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Company could replace the 6.6-liter Duramax V8

A couple of mysterious Chevrolet Silverado HD pickups have been spied undergoing testing in the United States.

While the models feature a camouflaged front end, they don't appear to be facelifted variants as most of the bodywork is unchanged. The only noticeable difference is a camouflaged hood which has a large air intake. This suggests the prototypes are testing a new engine.

There's no word on what's under the hood but the red prototype has a prominent diesel sticker on the rear bumper. This likely means we can expect a new diesel engine to replace the 6.6-liter Duramax V8 that develops 397 bhp (296 kW) and 765 lb-ft (1,037 Nm) of torque.
http://www.worldcarfans.com/11408057...-testing-a-new
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Old 08-06-14, 04:15 PM   #67
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The Duramax has since been one upped by the latest Ram Cummins and Ford 6.7.
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Old 08-17-14, 10:50 PM   #68
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Hennessey Performance tests their first HPE650 Supercharged upgrade on the new 6.2L direct injected GMC Sierra pick-up truck.
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Old 08-17-14, 10:50 PM
 
 
 
 
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