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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Shift Interlock Systems >> Symptom Tests >> Test A: Park Lock Solenoid Inoperative (Floor Shift)

Test A: Park Lock Solenoid Inoperative (Floor Shift)

NOTE: For circuit reference, see CONNECTOR IDENTIFICATION  and WIRING DIAGRAMS  .
  1. Did you review the DESCRIPTION and OPERATION and perform the necessary inspections? If so, go to next step. If not, see DESCRIPTION & OPERATION .
  2. Place the gearshift lever in the Park position. Turn ignition switch to the OFF position. Depress the brake pedal. Attempt to move the gearshift lever out of the Park position. Does the gearshift lever move out of the Park position? If so, go to next step. If not, check for intermittent condition. See SYMPTOM DIAGNOSIS  under TROUBLE SHOOTING.
  3. Disconnect the park lock solenoid. See STEERING COLUMN PARK LOCK SOLENOID (FLOOR SHIFT)  under REMOVAL & INSTALLATION. Press and hold the brake pedal. Attempt to move the gearshift lever out of the Park position. Does the gearshift lever move out of the Park position? If so, go to next step. If not, go to step  5.
  4. Inspect park lock solenoid for poor connections. Did you find and correct the condition? If so, go to step  7. If not, go to step  6.
  5. Repair the stoplamp switch voltage supply circuit (Light Green/Black wire) for a short to voltage. After repairs, go to step  7.
  6. Replace the park lock solenoid. See FLOOR SHIFT CONTROL  under REMOVAL & INSTALLATION. After repairs, go to next step.
  7. Operate the system in order to verify the repair. Did you find and correct the condition? If so, system is okay. If not, go to step  2.
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