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Home >> Geo >> 1995 >> Prizm Base, Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Testing >> No Gear Movement Test

No Gear Movement Test

  1. Remove hydraulic modulator/motor pack assembly and separate motor pack from hydraulic modulator. Rotate each gear by hand on hydraulic modulator. Front gears (non center gear) should rotate about 5 full turns lock-to-lock. If any gear does not turn freely or at least 5 turns are not possible, replace hydraulic modulator.
  2. The rear gear should rotate about 4 full turns lock-to-lock. If gear does not turn freely or at least 4 turns are not possible, replace hydraulic modulator.