Chevy consigns 4-dr Blazers to the fleet market for 2005, leaving retail buyers with an unchanged 2-dr model. This SUV uses an 11-year-old truck-based design and seats four. It has a 4.3-liter V6, manual and automatic transmissions, and standard antilock 4-wheel disc brakes. Front side airbags are unavailable. Blazer is offered with rear-wheel drive or one of two 4WD setups with low-range gearing: optional all-surface Autotrac or basic 4WD that should not be left engaged on dry pavement. An off-road-oriented ZR2 package features a high-riding suspension, larger tires, fortified chassis components, skid plates, tubular side steps, and front brush guard.