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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 23 (Disc Brakes) >> Symptom Tests >> Brake Fluid Loss

Brake Fluid Loss

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
  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. 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 step  7. If not, go to next step.
  3. 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  7. If not, go to next step.
  4. Is the vehicle equipped with vacuum assist brakes? If so, go to next step. If not, see HYDRAULIC BRAKE SYSTEM  under DIAGNOSTIC STARTING POINTS under TROUBLESHOOTING.
  5. Separate the master cylinder from the vacuum brake booster. Do not disconnect any brake pipes. See MASTER CYLINDER  under REMOVAL & INSTALLATION. Inspect the rear of the master cylinder for a brake fluid leak. Inspect for brake fluid in the vacuum brake booster. Did you find a brake fluid leak? If so, go to next step. If not, see HYDRAULIC BRAKE SYSTEM  under DIAGNOSTIC STARTING POINTS under TROUBLESHOOTING.
  6. Replace the brake master cylinder and the vacuum brake booster. See MASTER CYLINDER  or VACUUM BRAKE BOOSTER  under REMOVAL & INSTALLATION. When complete, go to next step.
  7. Road test the vehicle 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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