In 2006, the Vortec Max trailering package became available. The Vortec Max package was added to the option list with an array of similar features and new badges, and at its core retained the LQ9/4L65-E powertrain. However, the Vortec Max package differed from the Performance edition in that it also came with a variant of the Z85 Handling/Trailering suspension, as well as 17-inch wheels and tires under the option code NHT (and was available on 4x4 models in addition to 4x2 trucks) versus the Z60 High Performance Suspension and 20-inch wheel and tire package of the regular B4V (which was limited to 2 wheel drive trucks). This was because the Vortec Max package was intended for max trailer towing, while the Performance Edition was intended more for customers who wanted the Silverado SS mechanicals without the visuals of the SS. It was also made available (in addition to the extended cab) in the light-duty 4-door crew cab models. Towing capacity with the VortecMax Trailing package was 10,800 pounds.