Disc Brake Component Specifications

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Disc Brake Component Specifications
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.
Disc Brake Component Specifications

Application Specification
Metric English
Front Brake Pads
  • Minimum Lining Thickness
1.00 mm 0.039 in
  • New Lining Thickness
11.00 mm 0.433 in
Front Brake Rotors
  • Discard Thickness *
23.00 mm 0.906 in
  • Maximum Assembled Lateral Runout
0.05 mm 0.002 in
  • Maximum Groove Depth
1.50 mm 0.059 in
  • Maximum Thickness Variation
0.025 mm 0.001 in
  • New Thickness
25.00 mm 0.984 in
Rear Brake Pads
  • Minimum Lining Thickness
1.00 mm 0.039 in
  • New Lining Thickness
10.00 mm 0.394 in
Rear Brake Rotors
  • Discard Thickness *
7.50 mm 0.295 in
  • Maximum Assembled Lateral Runout
0.15 mm 0.006 in
  • Maximum Groove Depth
1.50 mm 0.059 in
  • Maximum Thickness Variation
0.025 mm 0.001 in
  • New Thickness
9.00 mm 0.354 in
* All brake rotors have a discard dimension cast into them. Replace any rotor that does not meet this specification. After refinishing the rotor, replace any rotor that does not meet the minimum thickness specification.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.