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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 63 (Shift Interlock Systems) >> Symptom Tests >> Test A: Shift Lever Does Not Move With Brake Pedal Depressed

Test A: Shift Lever Does Not Move With Brake Pedal Depressed

WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2002 GMC Savana Special, 2002 GMC Savana Camper Special, 2002 GMC Savana, 2002 Chevrolet RV Cutaway, and 2002 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: For circuit reference, see CONNECTOR IDENTIFICATION  and WIRING DIAGRAMS  .
  1. Did you perform the symptom diagnosis check and necessary inspections? If so, go to next step. If not, see SYMPTOM DIAGNOSIS  under TROUBLE SHOOTING.
  2. Turn ignition switch to the ON 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, check for Intermittent condition. See SYMPTOM DIAGNOSIS  under TROUBLE SHOOTING. If not, go to next step.
  3. Turn ignition switch to the OFF position. Disconnect the stoplamp switch. Turn the ignition switch to the ON position. 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 step  5 . If not, go to next step.
  4. Turn ignition switch to the OFF position. Disconnect the shift lock solenoid. Turn the ignition switch to the ON position. 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 step  7 . If not, go to step  6 .
  5. Inspect the stoplamp switch for poor connections. Did you find and correct the condition? If so, go to step  10 . If not, go to step  8 .
  6. Inspect the shift lock solenoid for poor connections. Did you find and correct the condition? If so, go to step  10 . If not, go to step  9 .
  7. Repair the shift lock solenoid voltage supply circuit (Dark Green/White wire) for a short to battery voltage. After repairs, go to step  10 .
  8. Replace the stoplamp switch. See STOPLAMP SWITCH  under REMOVAL & INSTALLATION. After repairs, go to step  10 .
  9. Replace the shift lock solenoid. See SHIFT LOCK SOLENOID  under REMOVAL & INSTALLATION. After repairs, go to step  10 .
  10. 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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