I was reading the story about the 2015 GMC Sierra 2500 HD
and Chevrolet Silverado
2500 HD by Allyson Harwood. In the article, she says the truck is able to carry a 100-pound snowplow and associated gear. What is the associated equipment? A snowplow weighs hundreds of pounds, not 100. She also says all HD 4x4s are plow-ready. I really don't know if this is true. Some are spec'd with a plow prep package, some are not. She also mentioned toward the end of the article that "there is more cooling," but does not elaborate. The paragraphs before this sentence did not lead up to this conclusion.
You are correct. Snowplows are quite heavy, and can add several hundred pounds if not more than 1000 pounds to the front axle of a vehicle. We reached out to Chevrolet for a more detailed explanation of the front load capacity of its trucks in regard to accommodating snowplows, and came up with a specific metric formula to determine capacity: W x (A + WB)/WB, or in plain language, accessory weight multiplied by the distance of the accessory from the front axle plus wheelbase, divided by wheelbase. So let's take the 2015 Chevy Silverado HD. We'll go with the crew cab, regular bed configuration. Equipped with the Duramax diesel, the truck has a front gross axle weight rating of 5200 pounds, and a wheelbase of 153.7 inches. Let's assume for argument's sake that a 1000-pound plow is mounted 30 inches ahead of the front axle. Using the formula, we come up with the figure of 1195 pounds. If that additional weight is within the front gross axle weight rating, you're good to go.
In terms of "all" 4x4 models having a plow prep package, Allyson might have meant that the prep package is available in all 4x4 HD configurations. The plow prep package does include specific hardware and accessories, such as a power feed for the backup and roof emergency light, a heavy-duty alternator (or dual alternators on the diesel), a forward lamp wiring harness, a provision for a cab roof-mounted light, the skidplate package, and heavy-duty front springs. As far as additional cooling, you are correct there, too. Although the 1500 package does include an external transmission oil cooler, the additional features of the package are limited to what's listed above.
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