[ 1]
Standard 3.6L DI DOHC V6 with 308 horsepower and 275 lb-ft of torque
Optional 2.8L Duramax Turbo-Diesel engine with 186 horsepower and 369 lb-ft of torque
Front and rear wheel flares
2" front and rear lift
3.5" wider stance
31" Goodyear Wrangler Duratrac off-road tires
Exclusive ZR2 17 x 8-inch aluminum alloy wheels
Modified rear axle with a 3.42 ratio
Front and rear electronic locking differentials
Multimatic™ shocks (DSSV)
Tubular rocker protection
Modified front and rear bumpers for better off-road obstacle clearance
Skid plates
Aggressive grille and hood combo unique to ZR2
Off-Road Mode Technology - Seamlessly pick between Desert, Mud or Mountains
Optional full-size bed-mounted spare tire carrier
[ 2]
Ladder-type Frame with modified mounting points
100mm wider track (3.9 inches wider than regular S-10)
Increased ground clearance (Approx 3" over Regular S-Series 4x4)
Enhanced front (7.25" ring gear) and rear (8.5" ring gear) axles w/ 3.73:1 rear-axle ratio
Larger wheel and axle bearings
31 x 10.50" BFG A/T Tires (Pickup), 31 x 10.50" BFG Longtrails (Blazer)
46mm gas pressurized Bilstein Monotube shocks
Rear track bar (Pickup), Rear anti-sway bar (Blazer)
Skid plates
Fender flares
[ 3]
Front and rear wheel flares
P215/75R-15 all-season tires
Exclusive ZR2 alloy wheels
Standard power windows and mirrors
Front skid plate
1994 - ZR2 package is introduced with the Regular Cab second-generation S-Series Pickups
1995 - ZR2 package expanded to Extended Cab S-Series Pickups
1996 - ZR2 package extended to two-door Blazer models. Third door was offered on extended cab models.
1998 - Disc brakes are now standard on the front and rear wheels. Interior updated along with front grille and headlights.
1999 - GM replaces the aluminum skid plates with composite skid plates. Side mirrors are updated. (much stronger)
Last model year the ZR2 option was offered on a regular-cab pickup.
2001 - ZR2 package extended to Chevrolet Tracker
2002 - ZR2 Trackers were upgraded to the LT trim level, offering optional leather upholstery
2003 - During the production year, ZR2s begin shipping with General Ameritrac tires instead of BF Goodrich tires.
GM discontinues S-Series Pickups. This is the last year that the ZR2 is available on a pickup.
A GMC Jimmy ZR2 surfaces in Canada. The Jimmy ZR2 was unavailable in the USA.
2004 - ZR2 available on Blazer and Tracker models. For the first time, the ZR2 is offered in 2WD.
GM discontinues Tracker including ZR2 model.
2005 - This is the last year for the ZR2 Blazer (USA) and Jimmy (Canada)
GM discontinues all remaining S-Series models. RPO ZR2 is phased out.
2017 - GM reintroduces the ZR2 option on the Chevrolet Colorado.
2022 - GM introduces the ZR2 option on the Chevrolet Silverado 1500.
2023 - GM introduces the ZR2 option on the Chevrolet Silverado 2500HD. 
