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Other Brake Conditions

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CONDITION POSSIBLE CAUSES CORRECTION
BRAKES CHATTER 1. Disc brake rotor has excessive thickness variation. 1. Isolate condition as rear or front. Reface or replace brake rotors as necessary.
BRAKES DRAG (FRONT OR ALL) 1. Contaminated brake fluid. 1. Check for swollen seals. Replace all system components containing rubber.
2. Binding caliper pins or bushings. 2. Replace pins and bushings
3. Misadjusted stop lamp switch. 3. Replace stop lamp switch. Refer to SWITCH, STOP LAMP, REMOVAL .
5. Binding brake pedal. 5. Replace brake pedal/bushings.
BRAKES DRAG (REAR ONLY) 1. Parking brake cables binding or froze up. 1. Check cable routing. Replace cables as necessary.
2. Parking brake cable return spring not returning shoes. 2. Replace cables as necessary.
3. Obstruction inside the center console preventing full return of the parking brake cables. 3. Remove console and remove obstruction.
BRAKES GRAB 1. Contaminated brake linings. 1. Inspect and clean, or replace pads. Repair source of contamination.
2. Improper power brake booster assist. 2. Refer to BOOSTER, POWER BRAKE  .
EXCESSIVE PEDAL EFFORT 1. Obstruction of brake pedal. 1. Inspect, remove or move obstruction.
3. Glazed brake linings. 3. Reface or replace brake rotors as necessary. Replace brake pads.
4. Brake lining transfer to brake rotor. 4. Reface or replace brake rotors as necessary. Replace brake pads.
EXCESSIVE PEDAL TRAVEL (VEHICLE STOPS OK) 1. Air in brake lines. 1. Bleed brakes.
EXCESSIVE PEDAL TRAVEL (ONE FRONT WHEEL LOCKS UP DURING HARD BRAKING) 1. One of the two hydraulic circuits is malfunctioning. 1. Inspect system for leaks. Check master cylinder for internal malfunction.
PEDAL PULSATES/SURGES DURING BRAKING 1. Disc brake rotor has excessive thickness variation. 1. Isolate condition as rear or front. Reface or replace brake rotors as necessary.
PEDAL IS SPONGY 1. Air in brake lines. 1. Bleed brakes.
PREMATURE REAR WHEEL LOCKUP 1. Contaminated brake linings. 1. Inspect and clean, or replace pads. Repair source of contamination.
2. EVBP not functioning. 2. Refer to ANTILOCK BRAKE SYSTEM (ABS) - SERVICE INFORMATION - 500 - ELECTRIC and appropriate diagnostic information.
STOP LAMPS STAY ON 1. Stop lamp switch out of adjustment. 1. Replace stop lamp switch. Refer to SWITCH, STOP LAMP, REMOVAL .
2. Brake pedal binding. 2. Inspect and replace as necessary.
VEHICLE PULLS TO RIGHT OR LEFT ON BRAKING 1. Frozen brake caliper piston. 1. Replace frozen piston or caliper. Bleed brakes.
2. Contaminated brake lining (most likely front lining). 2. Inspect and clean, or replace pads. Repair source of contamination.
3. Pinched brake lines. 3. Replace pinched line.
4. Leaking piston seal. 4. Replace piston seal or brake caliper.
5. Suspension problem. 5. Refer to FRONT SUSPENSION & WHEEL ALIGNMENT - 500 - ELECTRIC or REAR SUSPENSION - 500 - ELECTRIC .
PARKING BRAKE - EXCESSIVE HANDLE TRAVEL 1. Parking brake cables out of adjustment. 1. Adjust parking brake cables. Refer to STANDARD PROCEDURE  .