"Our focus has consistently been on delivering customers the most capable heavy-duty trucks in the market. The first set of capability tests confirmed that the team had exceeded the payload and towing targets by a significant margin,” Rick Spina, GM Full-size Truck global vehicle line executive, said in a release.
“Ongoing testing demonstrated a clear opportunity to increase the true capabilities of these trucks. Even pulling a combined weight of nearly 15 tons seems easy behind the wheel of a 2011 Silverado HD 3500 with the proven Duramax Diesel."
According to Chevrolet, engineers conducted a series of tests to certify increased payload and towing capacities for the 2011 Silverado HD, as follows:
- Based on extensive testing at maximum gross combined weight rating (GCWR) to validate the durability of the powertain, drivetrain, and brake components, the GCWR is increased to 29,200 pounds.
- Based on further testing in varied terrain, grades, and climates while pulling the maximum trailer weight to confirm predictable and stable handling, the maximum 5th-wheel towing capacity was increased to 21,700 pounds, and conventional towing capacity increased to 17,000 pounds.
- After higher-strength steel for cargo box cross sills was specified, the team conducted additional testing hauling maximum payloads to test the stronger cargo box and rear-axle components. As a result, the maximum payload has been increased to 6,635 pounds.
"We encourage consumers to test drive the Silverado HD against competitive models," said Spina. "Based on our test results, we are confident the Silverado HD will prove to be the best choice for real-world towing and hauling needs."