Chevrolet’s four-wheel drives began with the NAPCO Powr-Pak of 1955–59 and the factory K10 and K20 of 1960, and run through the K5 Blazer of 1969–91 (90,987 in 1979 alone), the square-body and GMT400 K-series, the Suburban and Tahoe, the Silverado since 1999 with the Z71, Trail Boss and ZR2, the compact LUV, S-10 and Tracker and the Colorado ZR2. Two-wheel-drive trucks and the crossovers are outside the registry.
Chevrolet’s four-wheel-drive pick-ups: the NAPCO Powr-Pak conversions of 1955–59, the factory K10 and K20 of 1960, the Action Line of 1967–72, the square body of 1973–91 (the CUCV military trucks among them), the GMT400 of 1988–2000 with the Z71 package, and the Silverado since 1999 with the Trail Boss and ZR2.
The full-size Chevrolet four-wheel-drive wagons: the Suburban with four-wheel drive since 1957, the K5 Blazer of 1969–91 with its removable top (4,935 in 1969, 90,987 in 1979; the M1009 CUCV its military version), the GMT400 Blazer of 1992 renamed Tahoe in 1995, and the Tahoe and Suburban of every Silverado generation since.
Chevrolet’s compact and mid-size four-wheel drives: the Isuzu-built LUV 4x4 of 1979–82, the S-10 pick-up and S-10 Blazer of 1983–2005 with the wide-track ZR2 of 1994–2003, the Suzuki-built Tracker of 1989–2004, and the Colorado since 2004 with the 2017 ZR2 and ZR2 Bison.