GMC chevrolet camaro 2000 Service Manual page 488

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Brakes
Hydraulic Brakes 5-15
Hydraulic Brake Diagnostic System Check (cont'd)
Symptom
Causes
Brakes Chatter (Roughness)
• Scored rotor. Refer to Refinishing Brake Rotors (Front)
or Refinishing Brake Rotors (Rear).
• Improper thickness variation in rotor. Refer to Brake
Rotor Thickness Variation Check.
• Excessive lateral runout in rotor. Refer to Brake Rotor
Lateral Runout Check.
• Brake assembly attachments loose (including splash
shield).
• Loose front suspension parts.
• Out-of-balance wheel assembly.
• Improperly torqued wheel nuts.
• Rotor corroded.
• Grease or dirt on the rotor.
Brakes Groan at the End of Stop
• Incorrect lining material.
• Contaminated brake lining.
• Brake lining damage by abuse.
• Grease or dirt on the rotor.
Brake Warning Lamp ON
'
• Leaking brake line or connection. Refer to Brake
Fluid Leak.
• Leaking piston seal. Refer to Brake Caliper Overhaul
(Front) or Brake Caliper Overhaul (Rear).
• Leaking master cylinder (internal). Replace master
cylinder. Refer to Master Cylinder Replacement.
• Air in brake system. Refer to Hydraulic Brake System
Bleeding (Manual Bleeding) or Hydraulic Brake System
Bleeding (Pressure Bleeding).
• Contaminated or improper brake fluid. Refer to Brake
)
Fluid and Brake Fluid Handling.
• Parking brake switch circuit grounded.
• Parking brake not releasing.
• Low brake fluid. Refer to Master Cylinder Reservoir
Filling.
Premature Lining Wear
• Leaking brake line or connection. Refer to Brake
Fluid Leak.
• Incorrect lining material.
• Brake lining damaged by abuse.
• Improperly adjusted stoplamp switch or cruise control
vacuum dump. Refer to Stop/amp Switch Adjustment.
• Brake pedal linkage interference or binding.
• Incorrect vacuum booster pushrod length.
• Operator riding brake pedal.
• Sticking caliper or caliper pistons. Refer to Brake Caliper
Overhaul (Front) or Brake Caliper Overhaul (Rear).
• Parking brake not releasing.
' '
• Caliper to knuckle clearance.
O
Improper rear brake adjustment.
• Excessive vehicle loading.
• Parking brake cable seized.
Parking Brake Won't Hold
• Worn out brake lining.
• Uneven brake lining wear.
• Incorrect lining material.
• Contaminated brake lining.
• Brake lining damaged by abuse.
• Improper rotor surface finish.
• Sticking caliper or caliper pistons. Refer to Brake Caliper
Overhaul (Front) or Brake Caliper Overhaul (Rear).
• Parking brake cables seized.
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.

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Pontiac firebird 2000

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