GMC chervolet camaro 1999 Service Manual page 492

Brakes
Hydraulic Brakes 5-17
Hydraulic Brake Diagnostic System Check (cont'd)
Symptom Causes
Brake Warning Lamp ON
• Leaking brake line or connection. Refer to Brake Fluid
Leaks.
• Leaking piston seal. Refer to Brake Caliper Overhaul
(Front) or Brake Caliper Overhaul (Rear).
• Leaking master cylinder (internal). Replace master
cylinder.
• Air in brake system. Refer to Hydraulic Brake System
Bleeding (Manual Bleed) or Hydraulic Brake System
Bleeding (Pressure Bleed).
• Contaminated or improper brake fluid. Refer to Brake
Fluid and Brake Fluic:J Handling.
• Parking brake switch circuit grounded. Refer to Engine
Controls in Engine.
• Parking brake not releasing. Refer to Parking Brake.
• Low brake fluid. Refer to Master Cylinder Reservoir
Filling.
Premature Lining Wear
• Leaking brake line or connection. Refer to Brake Fluid
Leaks.
• Incorrect lining material. Refer to Disc Brakes.
• Brake lining damaged by abuse. Refer to Disc Brakes.
• Improperly adjusted stoplamp switch or cruise control
vacuum dump. Refer to Stop/amp Switch Adjustment.
• Brake pedal linkage interference or binding. Refer to
Hydraulic Brakes.
• Incorrect vacuum booster pushrod length. Refer to
Hydraulic Brakes.
• Operator riding brake pedal.
• Sticking caliper or caliper pistons. Refer to Brake Caliper
Overhaul (Front) or Brake Caliper Overhaul (Rear).
• Parking brake not releasing. Refer to Parking Brake.
• Caliper to knuckle clearance. Refer to Disc Brakes.
• Improper rear brake adjustment. Refer to Parking Brake.
• Excessive vehicle loading.
• Parking brake cable seized. Refer to Parking Brake.
Parking Brake Won't Hold
• Worn out brake lining. Refer to Disc Brakes.
• Uneven brake lining wear. Refer to Disc Brakes.
• Incorrect lining material. Refer to Disc Brakes.
• Contaminated brake lining. Refer to Disc Brakes.
• Brake lining damaged by abuse. Refer to Disc Brakes.
• Improper rotor surface finish. Refer to Disc Brakes.
• Sticking caliper or caliper pistons. Refer to Brake Caliper
Overhaul (Front) or Brake Caliper Overhaul (Rear).
• Parking brake cables seized. Refer to Parking Brake.
Parking Brake Won't Release
• Sticking caliper or caliper pistons. Refer to Brake Caliper
Overhaul (Front) or Brake Caliper Overhaul (Rear).
• Parking brake cables seized. Refer to Parking Brake.