Although maybe not as hard-core as “TRD Pro,” “SVT,” or “Pro4X,” the designation Z71 has a fond place in many General Motors fans’ hearts. The designation is so well-regarded that it was chosen as the upscale trim level for the 2015 Chevrolet Colorado. It has long been offered on the Chevrolet Silverado and predecessor K1500 trucks and has been offered on GM’s fullsize SUVs, the Chevrolet Tahoe and Suburban, since 2001. The trim is returning to the big SUVs for 2015 this fall, with GM officially announcing the trim availability on the two models.
The release said more details on the specifications of the trim package would be released later in September. It’s unknown if it will be limited only to four-wheel drive or will be offered on both two and four-wheel-drive models. The Z71 trim has been offered on both two and four-wheel-drive versions of the Silverado but is more closely associated with the four-wheel-drive model.
On the Silverado, the Z71 package consists of an off-road suspension with Rancho monotube shocks, all-terrain tires, a transfer-case shield on four-wheel-drive models, a locking rear differential, appearance package, fog lamps, and recovery hooks. The Z71 package is offered on both the LT and LTZ trims on the Silverado but is a stand-alone trim on the Colorado.
Source: General Motors