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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 26 (Disc Brakes) >> Symptom Tests >> Brakes Drag

Brakes Drag

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  1. Were you sent here from SYMPTOM LIST under GENERAL DIAGNOSIS under TROUBLESHOOTING? If so, go to next step. If not, see HYDRAULIC BRAKE SYSTEM  under DIAGNOSTIC STARTING POINTS under TROUBLESHOOTING.
  2. Is the vehicle equipped with an adjustable stoplight switch and/or an adjustable cruise control release switch? If so, go to next step. If not, go to step  4.
  3. Inspect the stoplight switch for proper adjustment to ensure that the brake pedal is fully releasing. Inspect the cruise control release switch, if equipped, for proper adjustment to ensure that the brake pedal is fully releasing. Did you find and correct a condition? If so, go to step  11. If not, go to next step.
  4. Inspect the park brake system for proper operation. See PARK BRAKE SYSTEM DIAGNOSIS  under TROUBLESHOOTING. Did you find and correct a condition? If so, go to step  11. If not, go to next step.
  5. Inspect the disc brake system for proper operation. See DISC BRAKE SYSTEM DIAGNOSIS  under TROUBLESHOOTING. Did you find and correct a condition? If so, go to step  11. If not, go to next step.
  6. Separate the brake booster pushrod from the brake pedal. Inspect the brake corners to determine if the brake drag condition is still present. Do the brake corners still exhibit the brake drag condition? If so, go to step  8. If not, go to next step.
  7. Replace the brake pedal assembly. See BRAKE PEDAL ASSEMBLY  under REMOVAL & INSTALLATION. When complete, go to step  8.
  8. Separate the master cylinder from the brake booster. Do not disconnect any brake pipes. Inspect the brake corners to determine if the brake drag condition is still present. Do the brake corners still exhibit the brake drag condition? If so, go to step  10. If not, go to next step.
  9. Replace the brake booster assembly. See HYDRAULIC BRAKE BOOSTER  or VACUUM BRAKE BOOSTER  under REMOVAL & INSTALLATION. When complete, go to step  11.
  10. Inspect the hydraulic brake system for proper operation. See HYDRAULIC BRAKE SYSTEM DIAGNOSIS  under TROUBLESHOOTING. Did you find and correct a condition? If so, go to next step. If not, see HYDRAULIC BRAKE SYSTEM  under DIAGNOSTIC STARTING POINTS under TROUBLESHOOTING.
  11. Install or connect components that were removed or disconnected during diagnosis. Road test the vehicle in order to confirm proper operation. See BRAKE SYSTEM VEHICLE ROAD TEST  under SYSTEM TESTS. Is the condition still present? If so, go to step  2. If not, system is okay.
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