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A special Z71 package was offered for the second-generation Avalanche, available on the LT trim with either the 2LT or 3LT option groups. This off-road package consisted of a suspension tuned for rough terrain, an exclusive automatic-locking rear differential, aluminum under-body skid plates (visible from the front of the truck), wheel flares ...
[7] [8] General Motors also uses alphanumeric coding to denote handling packages installed on performance vehicles, such as "Z28" on the Camaro, the Buick GS, or the Oldsmobile 442, and currently uses the designation "Z71" on the Suburban and Tahoe (for Silverado/Sierra trucks, it is a package, though it was a separate trim from 2004–2005 and ...
For 1989, the Z71 (Off-Road Chassis Package [25]) option was introduced for both Chevrolet and GMC. Exclusive to K1500s, the option package included skid plates for the engine, front axle, and transfer case along with heavy-duty Bilstein shock absorbers. [21] It was distinguished by the "Z71" bedside graphics and standard aluminum-alloy wheels.
RPO Z71 was an off-road suspension for trucks that is not related to the drivetrain. It became notable enough to be promoted to a package name, even applied as a logo sticker onto the rear quarter body panel. But although it usually came with four-wheel drive, you could actually order a two-wheel drive Z71.
Most models come with the 2.8 L (171 cu in) LK5 I4 engine as standard, but a more powerful 3.5 L I5 comes with the Z71 package on four-door versions and is optional on all others. The 4-door Z71s also get the four-speed automatic transmission standard. This package was later dropped in favor of LT2 and LT3.
The 2016 Z71 package was modified again, as portions of the Z71 items added on the Texas Edition package as an optional feature by request from customers was discontinued, making it a stand-alone package. The Z71 package was upgraded to a level trim starting with the twelfth generation models.
The new Z71 Appearance Package was optional on LT and LTZ, which included body-color grille and front fascia, body-color door handles and mirror caps, unique Z71 bed decals, chrome sill plates, and a unique Z71 gauge cluster. Two new exterior colors were added: Taupe Gray Metallic and Sheer Silver Metallic. [citation needed]
Features that differ from those previously mentioned on the Tahoe Limited included the Z71 off-road chassis package (46 mm (1.8 in) Bilstein shock absorbers, a standard 3.73:1 rear axle ratio for the G80 locking differential), color-keyed wheel flares, trim, grille, and bumpers, underbody skid plates, inset driving lights built into the center ...