Brake Fluid Loss
WARNING: This page is about a different car, the 2003 Buick Regal, 2003 Buick Century, 2002 Buick Regal, and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
- Were you sent here from SYMPTOMS - HYDRAULIC BRAKES? If so, go to next step. If not, go to DIAGNOSTIC STARTING POINT HYDRAULIC BRAKES under TROUBLE SHOOTING.
- Inspect the hydraulic brake system for proper operation. See HYDRAULIC BRAKE SYSTEM under SYSTEM TESTS. Did you find and correct a condition? If so, go to step 7 . If not, go to next step.
- Inspect the disc brake system for proper operation. See DISC BRAKE SYSTEM under SYSTEM TESTS. Did you find and correct a condition? If so, go to step 7 . If not, go to next step.
- Inspect the drum brake system, if equipped, for proper operation. See DRUM BRAKE SYSTEM under SYSTEM TESTS. Did you find and correct a condition? If so, go to step 7 . If not, go to next step.
- 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, go to DIAGNOSTIC STARTING POINT HYDRAULIC BRAKES under TROUBLE SHOOTING.
- Replace the brake master cylinder and the vacuum brake booster. See MASTER CYLINDER , VACUUM BRAKE BOOSTER under REMOVAL & INSTALLATION. After repairs are complete, go to next step.
- Install or connect components that were removed or disconnected during diagnosis. Road test the vehicle to confirm proper operation. Is the condition still present? If so, go to step 2 . If not, system is okay.