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HOMESERVICE MANUALSCHEVROLET2008HHR LT, 2.4 P, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 123 (DISC BRAKE SYSTEM)REPAIR INSTRUCTIONSFRONT BRAKE ROTOR REPLACEMENTINSTALLATION PROCEDURE
2008 Chevrolet HHR LT, 2.4 P, Automatic

Installation Procedure

2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION Installation Procedure
WARNING: This page is about a different car, the 2009 Chevrolet HHR. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Whenever the brake rotor has been separated from the hub/axle flange, any rust or contaminants must be cleaned from the hub/axle flange and the brake rotor mating surfaces. Failure to do this may result in excessive assembled lateral runout (LRO) of the brake rotor, which could lead to brake pulsation.
  1. Using the J 42450-A  , thoroughly clean any rust or corrosion from the mating surface of the hub/axle flange. See Special Tools .
  2. Using the J 41013  , thoroughly clean any rust or corrosion from the mating surface of the brake rotor. See Special Tools .
  3. Inspect the mating surfaces of the hub/axle flange and the rotor to ensure there are no foreign particles or debris remaining.
    4. Fig 1: Identifying Brake Rotor And Retainers
    GM1910791Courtesy of GENERAL MOTORS CORP.
  4. Install the brake rotor (1).

    If installing the original brake rotor, align the rotor to the wheel hub as noted during rotor removal.

  5. If the brake rotor was removed and installed as part of a repair, measure the assembled LRO of the brake rotor. Refer to Brake Rotor Assembled Lateral Runout Measurement .
  6. If the brake rotor assembled LRO exceeds the specifications, bring the LRO to within specifications. Refer to Brake Rotor Assembled Lateral Runout Correction .
    7. Fig 2: Identifying Brake Caliper Bracket Bolts
    GM1910788Courtesy of GENERAL MOTORS CORP.
  7. Remove the support and position the brake caliper and bracket assembly to the wheel knuckle.
    8. CAUTION: Refer to Fastener Caution .
  8. Install the brake caliper bracket bolts (1).

    Tighten: 

    • J41/JM4: Tighten the bolts to 115 N.m (85 lb ft)
    • JL9: Tighten the bolts to 130 N.m (96 lb ft)

  9. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation .
  10. Lower the vehicle.
  11. If the brake rotor was refinished, replaced, or if new disc brake pads were installed, burnish the pads and rotors. Refer to Brake Pad and Rotor Burnishing .
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:

  • • 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.