Interestingly, the Chevy Avalanche also offered a sort of “hybrid” off-road / on-road package, also known as the Z66 package. While many enthusiasts are familiar with the Z71 Off-Road Package ...

Chevy also offers the Z66 on-road package for rear-wheel-drive models, with 17-inch touring tires and more road-oriented suspension tuning. A heavy-duty Avalanche with an 8.1-liter big-block ...

Rather than being purely cosmetic, the Z71 package will add a host of real mechanical upgrades to the Suburban, Silverado and Avalanche. Of course, Chevy is still making sure its big SUV and ...

The Avalanche, Tahoe and Suburban are available with a Z71 package that adds ... To that end, Chevy adds the Skid Plate Package, oversized wheel arch flares, tubular assist steps, extra bits ...

This is a highly desirable spec of the Chevy Avalanche. In addition to the Z71 Off-Road Package, it had the optional front bucket seats with leather seat inserts, an in-dash 6-disc CD changer ...

Over time, Z71 has represented both an optional suspension package available across various trim levels as well as being its own unique trim level. In the case of late-model Chevy Tahoe and ...