Heavy duty pickups have plenty of hauling and towing power, and General Motors has new tech aimed at boosting performance for the Duramax diesel engine. The secret is a new patented air intake system for the pickups.

As the last installment at our look at what we've learned about the 2017 heavy duty pickups from the big three, we look at the single newest feature on the Silverado HD, and we have a little sneak peek for GMC owners too.

Don't miss our other galleries in this series:

Ford super duty F nears dealerships

Focus on a special heavy duty pickup