The Chevrolet (S-10) Blazer and its badge engineered GMC (S-15) Jimmy counterpart are compact/mid-size SUVs manufactured and marketed by Chevrolet and GMC from the 1983 through 2005 model years, over two generations – until the early 1990s alongside these brands' full-size SUVs with near identical nameplates, but lacking removable hardtops.

The S-10 Blazer and S-15 Jimmy were based on the Chevrolet S-10 and GMC S-15/Sonoma pickup trucks and were manufactured in Pontiac, Michigan; Linden, New Jersey; Moraine, Ohio; Shreveport, Louisiana; and São José dos Campos, Brazil.

The Brazilian variant, based on the second-generation S-series, continued in production in Brazil through 2012 with its own sheetmetal stampings which were also used on the Chinese, Indonesian, and Russian versions.

In 1982, General Motors introduced the Chevrolet S-10 Blazer, and its rebadged GMC S-15 Jimmy variant, as 1983 models.

[4] Base power was provided by GM's 2.0-liter OHV gasoline inline four-cylinder engine, producing up to 83 horsepower (62 kW).

In March 1990, 4-door versions of the S-10 Blazer and Jimmy were introduced as a 1991 model; the 4-door had a 6.5 in longer wheelbase (2-doors had a 100.5 in wheelbase, six inches (152 mm) longer than the Ford Bronco II) and a one-piece front grille with a painted black insert (1990 two-door S-10 Blazers and Jimmys had the three-piece grille).

This came just months ahead of the introduction of the Ford Explorer, which replaced the Bronco II; six-and-a-half years after the segment-leading Cherokee debuted with four doors.

The upscale Oldsmobile Bravada appeared later in the year featuring an All-Wheel-Drive package called "Smart-Trak" (using a BorgWarner 4472 transfer case, shared with the AWD Astro/Safari).

The interior was a carryover from 1991 with the exception of the center console and steering wheel (X-bar style similar to the one used in the GMT400 trucks).

Body trim included also black plastic fender flares, front fog lights, and spare tire carrier on the tailgate.

This deleted the manual gear range selector with a three-position switch located to the left of the gauge cluster in the place of the rear defrost button found on other models (the defrost button assembly on models with the electronic transfer case is positioned below the headlight switch).

Only the two 4.3 L (262 cu in) engines were offered as options, the base TBI and the CPI (introduced in 1992 for the S-10/S-15 and Astro/Safari vans; the latter had the "Vortec" logo on the intake plenum).

The grille (alongside the S-10 pickup) was revised (which was a chrome-plated version of the base work truck grille found on base S-10 pickups), along with the addition of optional five-spoke alloy rims on 2WD models (which were basically a copy of the third-generation Camaro Z28 15" alloy rims).

Although the second generation S-10/S-15 pickup debuted in 1994, the S-Blazer and Jimmy continued unchanged for that year, with the only significant changes being a third brake light and the discontinuation of the rear spoiler.

The 1998 model Envoy featured an optional upgrade to High Intensity Discharge headlamps, and several other visual modifications.

In 1999, Chevrolet introduced a limited edition TrailBlazer appearance package that was available as an upgrade to the LS and LT trims.

The package featured gold-accented alloy rims and trim along with several interior/exterior modifications and upgrades and was marketed until the introduction of the GMT360 series for the 2002 model year.

[5] In 1998, General Motors launched the right-hand drive version to be built in the United States for the export to the countries with left-hand rule of road.

[9] The S-10 Blazer destined for the Japanese market had some modifications to suit the Japanese people: turn-signal stalk moving closer to the steering wheel, external rear-view mirrors electrically folding in to fit through the narrow streets, brake pedal changing its angle for easier reach, larger wheel arches, and a few miscellaneous changes.