ZR2 off-road package

Years 1971–72, 1994–05, 2017–27 Models 6 Factory citations 36

Also described as Special Purpose LS6 Engine Package (LS6 + M22 + HD brakes/suspension)Special Purpose LS6 Engine PackageChassis package, high rider performance, 4x4 sportChassis package, 4 x 4 sport, high wider performance

Also documented for GMC Oldsmobile

Documented applications

Corvette (C3)

1971 Confirmed

$1,747.00; 12 built; one-year-only option
1972 Factory-verified

Not offered/sold in 1972. Factory kit resolves the carryover question: the 1972 "Extra Cost Equipment" spec page (p.98) does literally list a ZR2 "off-road package, 454 V8" — but it is flagged **"(Not to be merchandised)"** and never appears on the retail Black Book summary (p.5), so it was a spec-book carryover never actually sold. CorvSport's ZR2 row (identical 1971 figures) is the carryover error

GM Heritage factory kit — 1972 Chevrolet Corvette, p.98.

Blazer — S-10 second generation (1995–2005)

1997–2005 Factory-verified

1998–1999 lists read FWD sport; the Blazer kits print it (1997 p.8, 1998 p.8, 1999 p.33), and Wikipedia names a Blazer ZR2 package

GM factory document — 1998 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 1999 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 2000 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 2001 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 2002 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 2003 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 2004 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 2005 chevrolet blazer 4wd rpo code list, p.1.
GM Heritage factory kit — 1997 Chevrolet S 10 Blazer, p.8.
GM Heritage factory kit — 1998 Chevrolet S 10 Blazer, p.8.
GM Heritage factory kit — 1999 Chevrolet S 10 Blazer, p.33.

Colorado — Second generation (GMT31XX) (2015–2022)

2017, 2020 Single-source

2017 from the NICB VIN manual (ZR2 4WD series, VIN code TE); NICB prints no RPO codes, so the code ZR2 is inferred from the series name and no factory list or guide confirms 2017; 2020 from GM Authority's 2020 Colorado page (ZR2 trim, equipment group 4ZR)
2018–2019, 2021–2022 Factory-verified

only in: 4WD; the guides name ZR2 models; the upfitter lists name it chassis package, high wider performance, 4 x 4 sport; 2018 from GM's 2018 Colorado order guide (PDF)

GM factory document — 2019 chevrolet colorado fleet order guide wayback, p.1.
GM factory document — 2021 chevrolet colorado fleet order guide wayback, p.1.
GM factory document — 2022 chevrolet colorado fleet order guide wayback, p.1.
GM factory document — 2018 chevrolet colorado order guide copy gm authority, p.80.

Colorado — Third generation (2023–2027)

2023–2027 Factory-verified

includes the factory lift with high-performance suspension, Multimatic DSSV dampers, off-road front fascia and rear bumper, fender flares and flow tie; ZR2: in a package; WT, LT, Trail Boss, Z71: not offered

GM factory document — 2023 chevrolet 23colorado electrical body builder, p.14.
GM factory document — 2024 chevrolet 24colorado electrical body builder manual 18272478 2023oct09, p.17.
GM factory document — 2025 chevrolet colorado fleet order guide, p.48.
GM factory document — 2026 chevrolet colorado fleet order guide, p.54.
GM factory document — 2027 chevrolet colorado fleet order guide, p.53.

S-10 pickup — Second generation (1994–2004)

1994–2004 Factory-verified

1998–1999 lists read FWD sport. The 2002–2004 lists read as the 2001 list.

GM factory document — 1998 chevrolet s10 pickup 4wd rpo code list, p.1.
GM factory document — 1999 chevrolet s10 pickup 4wd rpo code list, p.1.
GM factory document — 2000 chevrolet s10 pickup 4wd rpo code list, p.1.
GM factory document — 2001 chevrolet s10 pickup 4wd rpo code list, p.1.
GM factory document — 2002 chevrolet s10 pickup 4wd rpo code list, p.1.
GM factory document — 2003 chevrolet s10 pickup 4wd rpo code list, p.1.
GM factory document — 2004 chevrolet s10 pickup 4wd rpo code list, p.1.
GM Heritage factory kit — 1994 Chevrolet S 10, p.7.
GM Heritage factory kit — 1995 Chevrolet S 10, p.6.
GM Heritage factory kit — 1996 Chevrolet S 10, p.16.
GM Heritage factory kit — 1997 Chevrolet S 10, p.13.

Tracker — Second generation (1999–2004)

2001–2004 Factory-verified

only in: 4x4 (NICB lists the Tracker 4x4 ZR2 Sport; the 2WD and 4WD lists are the same)

GM factory document — 2001 chevrolet tracker 2wd rpo code list, p.1.
GM factory document — 2002 chevrolet tracker 2wd rpo code list, p.1.
GM factory document — 2003 chevrolet tracker 2wd rpo code list, p.1.
GM factory document — 2004 chevrolet tracker 2wd rpo code list, p.1.

This page aggregates every documented appearance of ZR2 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.