Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1360 (DISC BRAKE SYSTEM)REPAIR INSTRUCTIONSBRAKE PADS REPLACEMENT - REARINSPECTION PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Inspection Procedure
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Inspection Procedure
WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect the brake pads for wear. If the pad thickness is less than the specification, replace the disc brake pads in axle sets.
Specification: The minimum brake pad lining thickness is 1 mm (0.039 in).
- Clean and inspect the disc brake hardware. Replace components if necessary. Refer to Disc Brake Mounting and Hardware Inspection - Rear .
- Clean and inspect the caliper. Repair or replace components as necessary. Refer to Brake Caliper Inspection .
- Measure the brake rotor thickness. Refinish or replace the rotor as necessary. Refer to Brake Rotor Thickness Measurement .
- Measure the brake rotor thickness variation. Refinish or replace the rotor as necessary. Refer to Brake Rotor Thickness Variation Measurement .
- Inspect the surface of the brake rotor. Refinish or replace the rotor as necessary. Refer to Brake Rotor Surface and Wear Inspection .
- Measure the brake rotor assembled lateral runout. Refinish or replace the rotor as necessary. Refer to Brake Rotor Assembled Lateral Runout (LRO) Measurement .
IMPORTANT:
Refinish or replace the rotor ONLY if the condition of the rotor requires service. DO NOT refinish the rotor if the brake pads are the only components requiring service.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.