Here is a PDF for the current trailing chart. I'm still wondering where the 3.0L Duramax is going to fall in line. If it's 7800 pounds, it seems way to low compared to the other engines.
With an SAE-certified 277 horsepower and 460 lb-ft of torque, the Silverado 3.0L Duramax with four-wheel drive is also capable of towing up to 9,300 pounds and a max payload of 1,870 pounds, meeting the towing needs of about 90 percent of light-duty customers.
We'll wait for an updated chart from GM hopefully soon!