1993 Chevrolet Blazer brakes problems

Traffic was stopped ahead. Applied the brakes to slow down. The blazer did not respond. I hit the brakes as hard as possible when the anti-lock brakes deployed. The blazer still did not slow down. The blazer impacted two (2) other vehicals. The other vehicals left under there own power. The blazer had to be towed. The day was sunny and 92 degrees. The accedent report is on file at baracks 9 in lewis delaware.( DOT number: tire size: p265r75/16 )

Dt*: the contact stated that while driving 35MPH, the brake pedal was depressed in a normal braking situation. The ABS did not engage, therefore the stopping distance was extended. The vehicle was taken to a private repair shop, where the mechanic determined that the ABS system had malfunctioned. There is a NHTSA recall #99v193000, pertaining to the hydraulic antilock brakes. The vehicle was not included in the recall due to the VIN.